03 Force and motion Premium VersionBy Bomvirtual.com / June 6, 2025 0% 0 votes, 0 avg 164 123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960 Created by Bomvirtual.com 03 Force and motion Premium Version Everytime you restart the quiz, the MCQs will be different from Previous. Ratake the quiz again and again to prepare better. 1 / 60 Category: BOMVirtual.com Physics 03 Force and Motion, Topic Equations of motion s 1) If we drop an object, its initial velocity is zero. How far will it fall in time ‘t’? A) 0.49t² B) 98t² C) 9.8t² D) 4.9t² we know that s = vit + 1/2at2 if initial velocity as zero S = 0 + 1/2 (9.8) t2 S = 4.9 t2 2 / 60 Category: BOMVirtual.com Physics 03 Force and Motion, Topic Equations of motion s 2) A science museum designs an experiment to show the fall of a feather in a vertical glass vacuum tube. The time of fall from rest is too close to 0.5 s. What length of tube is required? [ETEA 2016-Eng] A) 10.0 m B) 5.0 m C) 2.5 m D) 1.3 m S = ½ at2 = ½ (9.8)(0.5)2 = 1.3m 3 / 60 Category: BOMVirtual.com Physics 03 Force and Motion, Topic Distance , displacement , speed ,velocity and acceleration. 3) Velocity-time curve for a body projected vertically upwards is: A) Hyperbola B) Parabola C) Straight line D) Ellipse When a body is projected vertically upwards, it moves under uniform acceleration due to gravity (g), which acts downward. The velocity decreases linearly with time until it reaches zero at the highest point, then increases in the downward direction. This results in a straight-line velocity-time graph with a negative slope (−g). 4 / 60 Category: BOMVirtual.com Physics 03 Force and Motion, Topic Projectile motion 4) A projectile thrown horizontally from 490m at 10 m/s takes time to reach ground: [ETEA 2007] A) 7.5 sec B) 2.5 sec C) 10 sec D) 5.0 sec t = √(2h/g) = √(2×490/9.8) = 10s 5 / 60 Category: BOMVirtual.com Physics 03 Force and Motion, Topic Distance , displacement , speed ,velocity and acceleration. 5) The area under force-displacement graph gives us [NUMS-2020] A) Work B) Acceleration C) Displacement D) Power Work = ∫F·ds = area under F-s graph. 6 / 60 Category: BOMVirtual.com Physics 03 Force and Motion, Topic Distance , displacement , speed ,velocity and acceleration. 6) The area under the acceleration-time graph represents [KMU-CAT 2023] A) Distance traveled B) Velocity C) Change in velocity D) Displacement Acceleration definition: a·dt = Δv. 7 / 60 Category: BOMVirtual.com Physics 03 Force and Motion, Topic Collisions 7) In perfect elastic collision: [NUMS 2021] A) Only kinetic energy is conserved B) Momentum, kinetic energy, and total energy are conserved C) Only total energy is conserved D) Only momentum is conserved A collision in which both K.E and momentum is conserved is called Elastic collision 8 / 60 Category: BOMVirtual.com Physics 03 Force and Motion, Topic Projectile motion 8) During projectile motion, the horizontal component of velocity: A) Remains constant B) Increases with time C) Changes with time D) Becomes zero During projectile motion, the horizontal component of velocity (Vₓ) remains constant while the vertical component (Vᵧ) changes with time. 9 / 60 Category: BOMVirtual.com Physics 03 Force and Motion, Topic Collisions 9) In elastic collision, when a massive body collides with a light body at conditions m₁ >> m₂ and v₂ = 0 ms⁻¹, then the change in velocity will be written as: [MDCAT 2018] A) V₁’ ≈ v₁; V₂’ ≈ 2v₁ B) V₁’ ≈ -v₁; V₂’ ≈ v₁ C) V₁’ ≈ -v₁; V₂’ ≈ 0 D) V₁’ ≈ v₁; V₂’ ≈ 0 v₁’≈v₁; v₂’≈2v₁ The heavy body continues almost unaffected. The light body moves at nearly double the initial speed. 10 / 60 Category: BOMVirtual.com Physics 03 Force and Motion, Topic Distance , displacement , speed ,velocity and acceleration. 10) The area between the velocity-time graph and the time axis is numerically equal to: A) Time B) Velocity C) Acceleration D) Distance v-t graph area = displacement/distance; s = v·t for constant v. 11 / 60 Category: BOMVirtual.com Physics 03 Force and Motion, Topic Projectile motion 11) The angle of projection where maximum height equals horizontal range is: [NUMS 2022] A) 90° B) 0° C) 76° D) 45° When θ=76°, maximum height equals horizontal range 12 / 60 Category: BOMVirtual.com Physics 03 Force and Motion, Topic Collisions 12) A car in motion hits and gets crashed into a tree trunk, what is NOT conserved? [KP-MDCAT 2024] A) Neither kinetic energy nor momentum B) Momentum alone C) Kinetic energy alone D) Momentum and kinetic energy both Momentum is conserved in collisions (assuming no external forces). Kinetic energy is NOT conserved in an inelastic collision (like a car crash), as some energy is converted to other forms (sound, deformation, heat). 13 / 60 Category: BOMVirtual.com Physics 03 Force and Motion, Topic Equations of motion s 13) Bodies which fall freely under the action of gravity is an example of: [ETEA 2011-Eng] A) Uniform velocity B) Variable acceleration C) Average acceleration D) Uniform acceleration Freely falling bodies experience constant acceleration due to gravity (ignoring air resistance), which is called uniform acceleration. 14 / 60 Category: BOMVirtual.com Physics 03 Force and Motion, Topic Collisions 14) Which is a statement of the principle of conservation of Momentum? A) Momentum is conserved providing no external forces act. B) Momentum is conserved only in elastic collisions C) Momentum is conserved by all bodies in a collision. D) Momentum is the product of mass and velocity. Principle of conservation of Momentum: Momentum is conserved providing no external forces act. 15 / 60 Category: BOMVirtual.com Physics 03 Force and Motion, Topic Projectile motion 15) The vertical and horizontal components of projectile motion are: [KP-MDCAT 2024] A) Dependent on each other B) Independent of each other C) Correlated with each other D) Associated with each other In projectile motion, the horizontal and vertical components are independent—gravity affects only the vertical motion, while horizontal motion remains constant (ignoring air resistance). 16 / 60 Category: BOMVirtual.com Physics 03 Force and Motion, Topic Projectile motion 16) A projectile’s maximum height equals its range. The angle of projection is: [ETEA 2019] A) Tan⁻¹(45) B) Tan⁻¹(60) C) Tan⁻¹(30) D) None Tanθ = 4 or 76° 17 / 60 Category: BOMVirtual.com Physics 03 Force and Motion, Topic Projectile motion 17) If a projectile’s initial velocity is doubled (same angle), its range becomes: A) R/2 B) 4R C) 2R D) R R = (u² sin2θ)/g; R ∝ u². If initial velocity doubles, range becomes four times (4×). 18 / 60 Category: BOMVirtual.com Physics 03 Force and Motion, Topic Projectile motion 18) A projectile launched at 60° with KE = 100J has KE at its highest point: A) 75J B) 25J C) 100J D) 50J K.Eₜₒₚ = K.Eᵢₙᵢₜᵢₐₗ cos²θ; cos²60° = (0.5)² = 0.25 ⇒ 25%; K.Eₜₒₚ = 0.25 × K.Eᵢₙᵢₜᵢₐₗ = 25 J 19 / 60 Category: BOMVirtual.com Physics 03 Force and Motion, Topic Distance , displacement , speed ,velocity and acceleration. 19) The area under acceleration-time graph represents [ETEA 2017-Eng] A) Velocity B) Displacement C) Change in velocity D) Distance traveled a-t graph area → Δv; v-t graph area → displacement. 20 / 60 Category: BOMVirtual.com Physics 03 Force and Motion, Topic Projectile motion 20) Doubling the initial velocity of a projectile while keeping all other parameters the same, the height reached by the projectile increases by: [ETEA 2023] A) Remains the same B) Two times C) Four times D) Three times H=vᵢ²Sin²θ/2g Doubling the velocity, quadruples the height. 21 / 60 Category: BOMVirtual.com Physics 03 Force and Motion, Topic Projectile motion 21) The range is the same for two angles that are: [ETEA 2017] A) 270° B) Complementary C) Supplementary D) Perpendicular The range of projectile is the same for two complementary angles 22 / 60 Category: BOMVirtual.com Physics 03 Force and Motion, Topic Collisions 22) A car in motion hits and gets embedded in a tree trunk. What is conserved? [ETEA 2019] A) Neither K.E nor momentum B) Momentum alone C) Momentum and K.E D) Kinetic energy alone In an inelastic collision, such as a car hitting and getting embedded in a tree, kinetic energy is not conserved (some of it is transformed into other forms of energy, such as heat and sound). However, momentum is always conserved in any type of collision, provided there is no external net force acting on the system. 23 / 60 Category: BOMVirtual.com Physics 03 Force and Motion, Topic Projectile motion 23) A bomber drops a bomb vertically above the target but misses due to: [ETEA 2011] A) Vertical velocity of bomber B) Gravity C) Horizontal velocity of bomber D) Acceleration of bomber Bomber misses target due to horizontal velocity component 24 / 60 Category: BOMVirtual.com Physics 03 Force and Motion, Topic Projectile motion 24) A shot is fired at 60° to the horizontal with kinetic energy E. Ignoring air resistance, the kinetic energy at the top of the trajectory is: [ETEA 2014] A) E/4 B) Zero C) E/8 D) E/2 K.E = ½mVₓ² = ½mVᵢ²cos²θ = E/4 25 / 60 Category: BOMVirtual.com Physics 03 Force and Motion, Topic Projectile motion 25) A particle covers 50 m when projected with initial speed *v*. If projected with speed 2v, the distance covered would be: A) 200 m B) 150 m C) 250 m D) 100 m R ∝ u² ⇒ If speed doubles, range quadruples: 4×50 = 200 m. 26 / 60 Category: BOMVirtual.com Physics 03 Force and Motion, Topic Projectile motion 26) The velocity of a projectile equals its initial velocity added to: [ETEA 2015] A) A constant horizontal velocity B) A constant vertical velocity C) A constantly increasing horizontal velocity D) A constantly increasing downward vertical velocity Projectile velocity = initial velocity + increasing downward vertical velocity 27 / 60 Category: BOMVirtual.com Physics 03 Force and Motion, Topic Equations of motion s 27) Two stones, 10Kg and 50 kg fall through 80 cm high cliff. Which stone has greater velocity at bottom? (g=10ms²) (ignoring air resistance) A) 10 Kg B) Both have same velocity C) Cannot be calculated D) 50 Kg Vf= Vi + at Final velocity does not depend on mass. 28 / 60 Category: BOMVirtual.com Physics 03 Force and Motion, Topic Distance , displacement , speed ,velocity and acceleration. 28) The velocity-time graph of a motion starting from rest with uniform acceleration is a straight line: [ETEA-2022] A) Parallel to velocity axis B) Parallel to time axis C) Not passing through origin D) Passing through origin Uniform acceleration from rest: v-t graph = straight line through origin (initial v=0). 29 / 60 Category: BOMVirtual.com Physics 03 Force and Motion, Topic Distance , displacement , speed ,velocity and acceleration. 29) Instantaneous and average velocities become equal when body: A) Moves in a circle B) Has uniform velocity C) Has zero acceleration D) Has variable velocity Uniform motion ⇒ instantaneous velocity = average velocity. 30 / 60 Category: BOMVirtual.com Physics 03 Force and Motion, Topic Projectile motion 30) Time taken by a projectile to reach its maximum height: A) (2Vᵢ cosθ)/g B) 2Vᵢ/g C) (Vᵢ cosθ)/g D) (Vᵢ sinθ)/g Time to summit: (Vᵢ sinθ)/g 31 / 60 Category: BOMVirtual.com Physics 03 Force and Motion, Topic Equations of motion s 31) A body is released from top of tower of height 80m the time taken to reach the earth is (take g=10m/s²). Neglect air resistance A) 5s B) 3s C) 2s D) 4s Using the kinematic equation h=(1/2)gt2= 80=1/2×10×t2 ⟹t=4s 32 / 60 Category: BOMVirtual.com Physics 03 Force and Motion, Topic Projectile motion 32) The range of a particle launched at 15° is 1.5 km. What is its range when launched at 45°? A) 3.0 km B) 6.0 km C) 0.75 km D) 1.5 km R₁₅° = (u² sin30°)/g = u²/2g = 1.5 km; R₄₅° = (u² sin90°)/g = u²/g = 3 km 33 / 60 Category: BOMVirtual.com Physics 03 Force and Motion, Topic Projectile motion 33) A ball dropped from a moving train follows: [ETEA 2005] A) Circular path B) Straight line C) Hyperbolic path D) Parabolic path A ball dropped from a moving train follows a parabolic path (projectile motion) 34 / 60 Category: BOMVirtual.com Physics 03 Force and Motion, Topic Equations of motion s 34) Suppose you drop an object from the roof of your house. It takes 2 sec. to reach the ground. What is the height of your house? [FMDC 2015] A) 20 m B) 5 m C) Insufficient information D) 10 m S = ½ at2 = ½ (9.8)(2)2 = 20m 35 / 60 Category: BOMVirtual.com Physics 03 Force and Motion, Topic Distance , displacement , speed ,velocity and acceleration. 35) When average velocity becomes equal to instantaneous velocity, then the body is moving with: A) Constant acceleration B) Constant velocity C) Variable velocity D) Instantaneous acceleration When average velocity becomes equal to instantaneous then the body is moving with constant acceleration. 36 / 60 Category: BOMVirtual.com Physics 03 Force and Motion, Topic Distance , displacement , speed ,velocity and acceleration. 36) Two blocks of masses 1.0 kg and 3.0 kg placed in contact are acted upon by a force of 40 N. The acceleration of 1.0 kg mass will be: A) 10 m/s² B) 40 m/s² C) 50 m/s² D) 30 m/s² a = F/(m₁+m₂) = 40N/4kg = 10 m/s². 37 / 60 Category: BOMVirtual.com Physics 03 Force and Motion, Topic Projectile motion 37) A stone projected upward at 15 m/s reaches maximum height: [ETEA 2018] A) 110 m B) 0.76 m C) 23 m D) 11 m h = v²/2g = (15)²/2g = 11m 38 / 60 Category: BOMVirtual.com Physics 03 Force and Motion, Topic Equations of motion s 38) A train travels on a straight track passing signal A at 20 m/s. It accelerates uniformly at 2 m/s² and reaches signal 100m further than A, at B the velocity of the train in m/s is A) 56 B) 28 C) 10 D) 20 2as = vf2 – vi2 2 x 2 x 100 = vf2 – 202 400 = vf2 -400 Vf = √800 = 28 m/s 39 / 60 Category: BOMVirtual.com Physics 03 Force and Motion, Topic Collisions 39) When two bodies stick together after the collision, the collision is said to be: A) None of these B) Completely inelastic C) Perfectly elastic D) Partially elastic When two bodies stick together after the collision, the collision is said to be completely inelastic 40 / 60 Category: BOMVirtual.com Physics 03 Force and Motion, Topic Equations of motion s 40) Two stones of different masses are dropped simultaneously from the top of a building. A) Larger stone hits the ground earlier B) Smaller stone hits the ground earlier C) Both stones reach the ground simultaneously D) Which stone reaches the ground earlier depends on the composition of the stone t=√(2h/g) and h and g are same. 41 / 60 Category: BOMVirtual.com Physics 03 Force and Motion, Topic Projectile motion 41) Two projectiles are in flight at the same time. The acceleration of one relative to the other is: [ETEA 2015] A) Zero B) Can be as large as 19.8 m/s² C) Can be horizontal D) Always 9.8 m/s² Relative acceleration between two projectiles in flight is zero 42 / 60 Category: BOMVirtual.com Physics 03 Force and Motion, Topic Equations of motion s 42) A ball of mass 5kg is dropped from height of 78.4m. The time taken by the ball to hit the ground is A) 2 sec B) 4 sec C) 8 sec D) 16 sec t = √(2h/g) = √(2(78.4)/9.8) = √16 =4 43 / 60 Category: BOMVirtual.com Physics 03 Force and Motion, Topic Projectile motion 43) A projectile is fired with vertical velocity = 20 m/s and horizontal velocity = 30 m/s. The horizontal distance covered is: A) 120 m B) 80 m C) 60 m D) 40 m R = (v₁² sin2θ)/g = (v₁² × 2sinθcosθ)/g = 2(v₁sinθ)(v₁cosθ)/g = 2(vₓ)(vᵧ)/g = 2×30×20/10 = 120 m 44 / 60 Category: BOMVirtual.com Physics 03 Force and Motion, Topic Projectile motion 44) A stone thrown horizontally from the top of a tall building follows a path that is: [ETEA 2015] A) Hyperbolic B) Circular C) Parabolic D) Made of two straight line segments Horizontally thrown stone follows parabolic path 45 / 60 Category: BOMVirtual.com Physics 03 Force and Motion, Topic Distance , displacement , speed ,velocity and acceleration. 45) The numerical value of displacement to distance is [ETEA 2017-Eng] A) Always equal to one B) Equal to or less than one C) Always more than one D) Always less than one Displacement ≤ distance ⇒ displacement/distance ≤ 1 (equals 1 only for straight paths). 46 / 60 Category: BOMVirtual.com Physics 03 Force and Motion, Topic Equations of motion s 46) The acceleration of free fall on a planet, P is 1/6th of the acceleration of free fall on earth. The mass of a body on planet P is 30 Kg, what is the weight on planet? [ETEA 2012-Eng] A) 49N B) 100N C) 4.9N D) 290N g on planet = 9.8/6, m = 30 Kg, W = m×9.8/6 = 30×9.8/6 = 30×1.63 = 48.9 = 49N 47 / 60 Category: BOMVirtual.com Physics 03 Force and Motion, Topic Projectile motion 47) The range of a projectile at 30° is R₃₀ and at 60° is R₆₀. Then: A) R₃₀ = 4R₆₀ B) R₃₀ = R₆₀ C) 2R₃₀ = R₆₀ D) R₃₀ = 2R₆₀ Complementary angles 48 / 60 Category: BOMVirtual.com Physics 03 Force and Motion, Topic Distance , displacement , speed ,velocity and acceleration. 48) Measure of displacement covered with passage of time is called: [ETEA-2023] A) Deceleration B) Velocity C) Acceleration D) Speed Velocity = displacement/time (vector); Speed = distance/time (scalar). 49 / 60 Category: BOMVirtual.com Physics 03 Force and Motion, Topic Distance , displacement , speed ,velocity and acceleration. 49) If the distance covered by a particle is zero then what can we say about its displacement [KMU-CAT 2024] A) It is negative B) It must be zero C) It cannot be zero D) It may or may not be zero Distance = total path length; Displacement = shortest start-to-end distance; If distance=0 ⇒ displacement=0. 50 / 60 Category: BOMVirtual.com Physics 03 Force and Motion, Topic Distance , displacement , speed ,velocity and acceleration. 50) If a moving object has no force acting on it: [ETEA-2023] A) Its velocity will increase while moving in a straight line B) Continue to move in a straight line at constant velocity C) It will decelerate and eventually stop D) It will stop immediately Newton’s 1st Law: Unforced objects maintain constant velocity (equilibrium state). 51 / 60 Category: BOMVirtual.com Physics 03 Force and Motion, Topic Equations of motion s 51) Distance covered by a freely falling body in 2 seconds will be: A) 19.6 m B) 39.2 m C) 44.1 m D) 4.9 m S = vᵢt +½ at² = at²/2 = 40/2 =20 m or S = 5t² → 5 (2)² = 20m 52 / 60 Category: BOMVirtual.com Physics 03 Force and Motion, Topic Projectile motion 52) A projectile launched at 30° with KE = E has KE at its highest point: A) E B) 0.90E C) 0.75E D) 0.50E K.Eₜₒₚ = K.Eᵢₙᵢₜᵢₐₗ cos²θ; cos²30° ≈ (0.87)² ≈ 0.75 ⇒ 75%; K.Eₜₒₚ = 0.75 × K.Eᵢₙᵢₜᵢₐₗ = 0.75E 53 / 60 Category: BOMVirtual.com Physics 03 Force and Motion, Topic Distance , displacement , speed ,velocity and acceleration. 53) An athlete completes one round of a circular track of radius R in 40 sec. What will be his displacement at the end of 2 min 20 sec? A) 2πR B) Zero C) 7πR D) 2R Total time of motion is 2 min 20 sec = 140 sec. As time period of circular motion is 40 sec so in 140 sec. athlete will complete 3.5 revolution i.e., He will be at diametrically opposite point i.e., displacement = 2R. 54 / 60 Category: BOMVirtual.com Physics 03 Force and Motion, Topic Projectile motion 54) Horizontal range (R) of a projectile: [ETEA 2009] A) R = V²/g Cosθ(2θ) B) R = V₁²/2g Sinθ C) R = V₁²/g Sin2θ D) R = V₀²/g SinθCosθ R = V₁²sin2θ/g 55 / 60 Category: BOMVirtual.com Physics 03 Force and Motion, Topic Projectile motion 55) A projectile launched at 45° with KE = E has KE at highest point: [ETEA 2012-14] A) 0.50E B) 0.71E C) 0.87E D) E Initial K.E = E. K.E at peak = ½mv²cos²θ = Ecos²45° ≈ 0.50E 56 / 60 Category: BOMVirtual.com Physics 03 Force and Motion, Topic Projectile motion 56) Two stones projected at angles (45° + θ) and (45° – θ) have horizontal ranges in the ratio: A) 1:02 B) 1:04 C) 1:01 D) 1:03 Ranges at angles (45° + θ) and (45° – θ) are equal. Thus, R₁:R₂ = 1:1 57 / 60 Category: BOMVirtual.com Physics 03 Force and Motion, Topic Equations of motion s 57) A ball of iron of mass 2 kg is dropped from the top of the building. The ball reaches the ground in 10 s. What is the velocity in m/s when it strikes the ground A) 150 B) 99 C) 27 D) 49 Vf=vi +at→vf=0+9.8 x 10 = 98 58 / 60 Category: BOMVirtual.com Physics 03 Force and Motion, Topic Equations of motion s 58) A racing car accelerates uniformly through their gear changes with the following average speeds: 20ms⁻¹ for 2.0s, 40ms⁻¹ for 2.0s and 60ms⁻¹ for 6.0s. What is the overall average speed of the car? A) 12ms⁻¹ B) 48ms⁻¹ C) 13.3ms⁻¹ D) 40ms⁻¹ First we will find S1,S2,S3…..Since S1=v1xt1 = 20×2=40m,& S2= 40×2=60m, & S3=60×6=360m Thus; Total distance=40+60+360=480m So, Average speed=480/10=48ms–1 59 / 60 Category: BOMVirtual.com Physics 03 Force and Motion, Topic Projectile motion 59) A missile is fired at 98 m/s at 30° with the horizontal. The missile is airborne for: [ETEA 2011] A) 10 sec B) 20 sec C) 30 sec D) 40 sec T = (2V₀sinθ)/g = (2×98×sin30°)/9.8 = 10s 60 / 60 Category: BOMVirtual.com Physics 03 Force and Motion, Topic Projectile motion 60) The span of a broad jump depends upon: [ETEA 2010] A) Height of jump B) Angle of projection of jumper C) Vision of jumper D) Mass of jumper Rₘₐₓ = v₀²/g at θ=45° Your score is 0% Restart quiz
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