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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- A. Perpendicular
- B. Supplementary
- C. Complementary
- D. 270̇°
Explanation: The range of projectiles is the same for two angles which are mutually complementary.
Correct answer: Complementary- A. 15
- B. 20
- C. 30
- D. 40
Explanation: R=Vi2(sin 2θ)/g At given condition: Maximum range= Rmax= vi2θ/g. For the maximum range, sin2θ=1 which is possible if we put the angle as…
Correct answer: 15- A. v = ω × r
- B. v = ω . R
- C. v = r × ω
- D. v = ω + r
Explanation: The relation between linear velocity (v) and angular velocity (ω) of a rotating body is given by the formula: v = r⋅ω
Correct answer: v = ω × r- A. π
- B. π /2
- C. 130 π
- D. 60 π
Explanation: The explanation is given below: The linear speed (v) of a point on the rim of a wheel can be calculated using the formula: v=2 πrf This…
Correct answer: π /2- A. A bullet shot from a rifle
- B. An object dropped from an airplane
- C. A thrown football
- D. All of the above
Explanation: The explanation is given below: Projectile motion is the motion of an object thrown or projected into the air, subject to the force of…
Correct answer: All of the above- A. 40 m
- B. 2.5 m
- C. 0.4 m
- D. 78.4 m
Explanation: The horizontal distance (d) traveled by the ball can be calculated using the formula:d=horizontal velocity×time of flightIn this case, the…
Correct answer: 40 m- A. Angular velocity
- B. Angular acceleration
- C. Angular displacement
- D. Angular speed
Explanation: The explanation is given below: Angular velocity is defined as the time rate of change of angular displacement.
Correct answer: Angular velocity- A. Remains same
- B. Varies with time
- C. Is zero
- D. Is positive
Explanation: Since horizontal component of velocity remains constant in projectile motion, therefore, the acceleration in horizontal direction is zero.
Correct answer: Is zero- A. (30°, 709)
- B. (40°, 50°)
- C. (35°, 40°)
- D. (45°, 40°)
Explanation: A. (30°, 70°) - Not complementary angles.B. (40°, 50°) - These angles are complementaryC. (35°, 40°) - Not complementary angles.D.
Correct answer: (40°, 50°)- A. Tanθ=10
- B. Tanθ=12
- C. Tanθ=16
- D. Tanθ=1
Explanation: Since Rtan θ = 4H 1/4 H tan θ = 4H tan θ = 16
Correct answer: Tanθ=16- A. two times
- B. three times
- C. four times
- D. remains the same
Explanation: When a projectile is launched, the maximum height it reaches is directly related to the square of its initial vertical velocity.
Correct answer: four times- A. R2=2R1
- B. R1=2R2
- C. R1=R2
- D. 3R=R1
Explanation: R=Vi2(sin2theta)/g R is same for both θ and (90−θ). If angle w.r.t. vertical is 45° then w.r.t to horizontal it will be 90°-45°= 45°.
Correct answer: R1=R2- A. 20, 60
- B. 60, 30
- C. 40, 60
- D. 25, 55
Explanation: The range of a projectile depends on its initial velocity and launch angle.
Correct answer: 60, 30- A. 86°
- B. 46°
- C. 66°
- D. 76°
Explanation: In projectile thrown at angle θ Range R and maximum height H are given as :Range, R= u2 (sin2θ)/g = u2 2sinθcosθ/gMaximum Height, H=…
Correct answer: 76°- A. vx= 0, vy=0
- B. vx= 0, vy constant
- C. vx= constant, vy= constant
- D. vx= constant, vy=0
Explanation: Vx/ horizontal component of velocity is always constant in absence of air resistance, as in absence of air friction we consider ax=0 and…
Correct answer: vx= constant, vy=0- A. Initial velocity of launch
- B. Horizontal motion only
- C. Vertical motion only
- D. Both horizontal and vertical motions
Explanation: Air friction, also known as air resistance or drag, affects both the horizontal and vertical motions of a projectile.
Correct answer: Both horizontal and vertical motions- A. Zero
- B. 9.8m/s²
- C. 19.6m/s
- D. 4.9m/s²
Explanation: In projectile motion, the horizontal component of acceleration is zero.
Correct answer: Zero- A. Zero
- B. 1
- C. -1
- D. 2
Explanation: The range of a projectile is maximized when sin(2θ)=1. This occurs at an angle θ=45.
Correct answer: 1- A. Circular motion
- B. Rotational motion
- C. Projectile motion
- D. Vibratory motion
Explanation: Projectile motion is a specific example of two-dimensional (2D) motion.
Correct answer: Projectile motion- A. 30°
- B. 45°
- C. 60°
- D. 90°
Explanation: The maximum height of a projectile is proportional to the square of the sine of the angle of projection.
Correct answer: 30°