Free Force and Motion MCQs with Answers
1,416 Force and Motion MCQs from Physics, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
Displacement, velocity and acceleration describe motion, including the horizontal and vertical components of projectile motion. The chapter connects these quantities with Newton's laws, momentum and impulse, then applies conservation of momentum to collisions, distinguishing elastic collisions from inelastic ones.
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1,416 questions · page 24 of 71
- A. 60m
- B. 55m
- C. 25m
- D. 30m
Explanation: To find the distance traveled, we calculate the area under the velocity-time graph. Step 1: Break down the graph into sections.
Correct answer: 60m- A. The particle starts with certain velocity, motion is retarded, and finally the particle stops
- B. The velocity of the particle is constant throughout
- C. The acceleration of the particle is constant throughout
- D. The particle starts with constant velocity, then motion is accelerated, and finally the particle moves with another constant velocity
Explanation: The displacement-time curve starts steep and gradually flattens out. This means the rate of change of displacement (i.e., velocity) is…
Correct answer: The particle starts with certain velocity, motion is retarded, and finally the particle stops- A. 2.04 m/s²
- B. 3.62 m/s²
- C. 5.18 m/s²
- D. 7.36 m/s²
Explanation: Net force = F - mg sinθ = 50 - (5 × 9.8 × sin30°) = 50 - 24.5 = 25.5 N. Acceleration = Fnet / m = 25.5 / 5 = 5.1 m/s².
Correct answer: 3.62 m/s²- A. 4.8 m
- B. 6.4 m
- C. 13.1 m
- D. 10.2 m
Explanation: To find the maximum height, we first resolve the initial velocity into its vertical component using vy = v sin 53°.
Correct answer: 13.1 m- A. Increasing
- B. Decreasing
- C. Constant
- D. Vary with time
Explanation: The equations of kinetics can be utilized for any motion that can be described as being either a constant velocity motion (an acceleration…
Correct answer: Constant- A. -1.14 m/s
- B. 0 m/s
- C. 1.14 m/s
- D. 2.28 m/s
Explanation: Using conservation of momentum and kinetic energy for elastic collision: v₁' = [(m₁ - m₂)/(m₁ + m₂)] , v₁ = [(3 - 5)/(3 + 5)] × 4 = (-2/8)…
Correct answer: -1.14 m/s- A. 42 N
- B. 46 N
- C. 68 N
- D. 53 N
- E. 58 N
Explanation: The question wants the object to only move down at 3 m/s2, we need to apply an upward force that would accelerate the object downwards at…
Correct answer: 68 N- A. Law of Inertia
- B. Equilibrium
- C. Law of action and reaction
- D. None
Explanation: Newton's third law states that when two bodies interact, they apply forces to one another that are equal in magnitude and opposite in…
Correct answer: Law of action and reaction- A. Mid-point
- B. Center of gravity
- C. Optical center
- D. Pole
Explanation: The point at which an applied force produces linear motion but no rotational motion is the "center of gravity." The center of gravity is…
Correct answer: Center of gravity- A. 15 m
- B. 25 m
- C. 35 m
- D. 40 m
- E. 55 m
Explanation: Given that: v = 10 and u = 0.2 and g = 10 Solution = Using F = μN then, = μmg (here N = mg) So from above (ma = μmg); we got a = μg Now a…
Correct answer: 25 m- A. 196 ms-1
- B. 14 ms-1
- C. 10 ms-1
- D. 100 ms-1
Explanation: Distance traveled by stone is 10m (so, s=10m), acceleration due to gravity on the stone is g (a=9.81ms-2), and initial velocity of stone…
Correct answer: 14 ms-1- A. 48
- B. 60
- C. 90
- D. 76
Explanation: This value should be learned for the exam because of the unavailability of calculators during the exam.
Correct answer: 76- A. Constantly increasing
- B. Constant but not zero
- C. Is directly proportional to square of displacement
- D. Is directly proportional to velocity
Explanation: According to F=ma, acceleration and force are both directly proportional to each other.
Correct answer: Constant but not zero474. Law of Conservation of Momentum states that total linear momentum of system remains constant if:
- A. Balanced external forces are applied to a system
- B. No external force is applied to a system
- C. Only linear force is applied in a system is zero
- D. Sum of external forces are applied to a system is zero
Explanation: As per the law of conservation of momentum. The total linear momentum of an isolated system remains constant.
Correct answer: Sum of external forces are applied to a system is zero- A. X
- B. 5X
- C. 10X
- D. X/2
Explanation: Workdone or energy= F x d Also, Energy=½ mv² So equating them together: F x d= ½ mv² d= mv²/ 2F Since m and ½ are constant d ∝ v²/F d=v²/F…
Correct answer: 5X- A. 12.5 m/s
- B. 6.3m/s
- C. 9.3 m/s
- D. 16.0 m/s
Explanation: s = ut + ½at² : since u=0 s =½at² a=(v-u)/t : since u = 0 t = v/a From the second equation, we get t = v/a Putting this into the first…
Correct answer: 6.3m/s- A. 1.5 and 1500
- B. 2.5 and 2400
- C. 3.5 and 3500
- D. 2 and 2400
Explanation: m=1200kg v=8m/s d=16m v2=u2+2as (8)2=(0)2+2(a)(16) 64=32a a=2m/s2 F = ma = 1200×2 =2400N
Correct answer: 2 and 2400- A. Option A
- B. Option B
- C. Option C
- D. Option D
Explanation: The total mass of rope and block = m+M and a force P is being applied to it.Since F = maacceleration = F/macceleration = p/(m+M)So, we…
Correct answer: Option D- A. 0.5
- B. 0.3
- C. 0.18
- D. 0.72
Explanation: This is the following solution: Ff = μ Fn Since the coin is just about to slip, the maximum value of static friction (Ff-max) is acting on…
Correct answer: 0.18- A. 3 : 1
- B. 1 : 3
- C. 1 : 2
- D. 2 : 1
Explanation: This is the following solution: (i) When lifted up with an acceleration of 4.9 m/s2: Tension = Weight + Force due to acceleration T1 = (1…
Correct answer: 3 : 1