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 37 of 71
- A. Parabolic
- B. Periodic
- C. Hyperbolic trajectory
- D. Linear
Explanation: Projectile motion is parabolic because the vertical position of the object is influenced only by a constant acceleration and also because…
Correct answer: Parabolic- A. Linear
- B. Parabolic
- C. Cubic
- D. Inverse
Explanation: A projectile's motion is parabolic because it is affected by gravity. Gravity causes the projectile to fall in a curved path, rather than…
Correct answer: Parabolic- A. 3 m/s
- B. 2m/s
- C. 1.5 m/s
- D. 1.8 m/s
Explanation: At the highest point of the projectile's trajectory, its horizontal velocity will be equal to the initial horizontal velocity.
Correct answer: 1.5 m/s- A. Variable
- B. Constant
- C. Zero
- D. None of these
Explanation: Option B is correct since the horizontal velocity of a projectile is constant (a never changing in value).
Correct answer: Constant- A. Parabola
- B. Non-linear
- C. Straight line
- D. Hyperbola
Explanation: When objects are in free fall, as in the projectile motion, the only force that is affecting them is the force of gravity and therefore…
Correct answer: Straight line- A. Tan-1 (45)
- B. Tan-1 (60)
- C. Tan 1 (30)
- D. None
Explanation: Maximum Height (H): H = (u²sin²θ) / 2g, where u is the initial velocity, θ is the angle of projection, and g is acceleration due to…
Correct answer: None- A. T = square root of (2H/g)
- B. T = square root of (3H/g)
- C. T= square root of (4H/g)
- D. T = square root of (H/g)
Explanation: T = square root of (2H/g) is the time required to reach maximum height, this formula has to be memorized
Correct answer: T = square root of (2H/g)- A. Perpendicular
- B. Supplementary
- C. Complementary
- D. 270̇°
Explanation: Two angles are complementary if their sum is 90 degrees. As explained previously, the range equation involves sin2θ.
Correct answer: Complementary- A. Horizontally
- B. Vertically
- C. Tangentially
- D. Linearly
Explanation: Assuming a projectile is launched from the ground level, the range is defined as the distance between the launch point and the point where…
Correct answer: Horizontally- A. Mass
- B. Angle
- C. Velocity
- D. Gravitational acceleration
Explanation: The mass of the projectile is irrelevant to the maximum height it can reach, as maximum height is dictated by the initial vertical…
Correct answer: Mass- A. 15
- B. 20
- C. 30
- D. 40
Explanation: R=Vi^2 sin 2θ/g At given condition: Maximum range=Rmax=vi^2θ/g For maximum range, sin2θ=1 which is possible if we put angle as 45 degrees…
Correct answer: 15- A. A
- B. B
- C. both at the same time
- D. Needs more information
Explanation: When two objects are launched with the same initial speed, the object that follows the trajectory with a shallower angle will reach the…
Correct answer: B- A. 90 degrees
- B. 45 degrees
- C. 60 degrees
- D. 30 degrees
Explanation: The correct option is D 30∘R=4H cot θ,If R=4√3H then cotθ=√3⇒θ=30∘
Correct answer: 30 degrees- A. Angular velocity will decrease
- B. Angular velocity remains constant
- C. The moment of inertia decreases
- D. Angular momentum increases
Explanation: The moment of inertia is a property of an object that describes how its mass is distributed around an axis of rotation.
Correct answer: The moment of inertia decreases- A. Circular path
- B. Rectilinear path
- C. Elliptical path
- D. Zig-Zag path
Explanation: Constant velocity refers to both speed and direction remaining constant.
Correct answer: Rectilinear path- A. Jump as high as possible
- B. Jump at an angle of 45°
- C. Jump at an angle of 60°
- D. None of the above
Explanation: Therefore, the most effective approach for a long jumper to improve their jumping record is to jump at an angle of 45 degrees to optimize…
Correct answer: Jump at an angle of 45°- A. 0o
- B. 45o
- C. 60o
- D. 90o
Explanation: The correct answer is 90 degrees. When a projectile is launched at 90 degrees, it is directed straight up, maximizing the vertical…
Correct answer: 90o- A. 1 N
- B. 2 N
- C. 2.5 N
- D. 10 N
Explanation: The question involves determining the outward force acting on a mass in circular motion, given its mass, velocity, and radius.
Correct answer: 1 N- A. M0 L0 T-1
- B. M0 L0 T-2
- C. M L-1 T0
- D. M L T-3
Explanation: The dimensional formula for angular velocity is determined by analyzing the rate of change of angular displacement with respect to time.
Correct answer: M0 L0 T-1- A. Radian s-1
- B. Radian-2 s-1
- C. Radian s-2
- D. Radian
Explanation: Angular acceleration is the rate of change of angular velocity with respect to time.
Correct answer: Radian s-2