Free Force and Motion MCQs with Answers

• A. 40 kmph
• B. 50 kmph
• C. 35 kmph
• D. 250 kmph

Explanation: Data: The weight of the car initially = m1 = 1000 kg Initial velocity of the car = v1 = 50 km/h The weight after placing the mass on it =…

• A. All of these
• B. Power
• C. Impulse
• D. Planck's constant

Explanation: The dimensions of momentum are [M1L1T-1] corresponding to its formula mv.

• A. m
• B. s
• C. m/s²
• D. m/s

Explanation: The slope of a displacement-time graph is given by:Δy/Δx = Δs/Δt, which is equal to velocity.

• A. Newton's first law
• B. Both of these
• C. None of these
• D. Newton's second law

Explanation: Newton's second law tells us that Fnet = 0 and Newton's third law states that to every action, there is always an equal and opposite…

• A. Nm/s
• B. Kgm/s
• C. N/s
• D. N/m

Explanation: Impulse refers to the force acting on an object for a short period of time.

• A. 1N
• B. 5N
• C. 3N
• D. 4N

Explanation: Force applied on the rope = 5 N Length of the rope = 5 m Assume x = mass of the rope.

• A. √2g/u
• B. None of these
• C. √(2h/g)
• D. √(2u/g)

Explanation: If we solve the second equation of motion for time:h = ut + 1/2gt2Since it is moving with v velocity therefore the initial velocity u must…

• A. -1
• B. 0
• C. Infinity
• D. 1

Explanation: The coefficient of restitution indicates the amount of kinetic energy remaining after the collision between two objects.In a perfectly…

• A. Force and displacement
• B. Mass and velocity
• C. Mass and force
• D. Force and velocity

Explanation: Momentum is defined as " the quantity of motion in a body."Mathematically is represented by 'p' and is given byp = m vWhere m is mass and…

• A. Frame of reference
• B. Inertial frames
• C. All frames
• D. Non-inertial frames

Explanation: Galiliean's law states that all laws of motion are the same in inertial or non-accelerating frames.

• A. m
• B. m2
• C. m/s
• D. m/s2

Explanation: Acceleration is the rate of change of velocity of an object with respect to time.

• A. Constant acceleration
• B. Variable acceleration
• C. Constant velocity
• D. Linearly varying velocity

Explanation: Thrust is the force generated by a rocket engine that propels the rocket forward.

• A. They will tilt rightwards
• B. They will tilt leftwards
• C. They will stay the way they were
• D. They will start jumping

Explanation: When a straight moving bus takes a sharp right turn, the passengers sitting inside the bus will experience a force acting towards the left…

• A. 20 m/s^2
• B. 5 m/s^2
• C. 10 m/s^2
• D. 40 m/s^2

Explanation: F=ma according to Newton's first law, so F/a (100/10) gives 10 which is the value for acceleration (a).

• A. Size of object A
• B. Straight line distance between the initial position and final position of the body
• C. Size of object B
• D. Any distance between the initial position and the final position of the body

Explanation: The magnitude of the displacement is the straight line distance between the initial position and final position of the body.

• A. 7/5 m/s
• B. 1 m/s
• C. 1/5 m/s
• D. 5 m/s

Explanation: To calculate average velocity, we need to divide the total displacement by the total time taken.

• A. 2π
• B. π
• C. Zero
• D. 10π

Explanation: When an object completes a full circle, it returns to its starting point. Therefore, the displacement of the object is zero.

• A. Displacement
• B. Time
• C. Velocity
• D. Distance

Explanation: Acceleration:Time rate of change in velocity is called acceleration.Mathematically:a=Δv/ΔtHence, C is the correct option.

• A. m2
• B. m1
• C. both m1 and m2
• D. Not enough information is available

Explanation: mass ∝ inertiaAs m1 is greater than m2.So m1 has greater inertia.Hence,B is the correct option.

• A. 2 m/s2
• B. 10 m/s2
• C. 1 m/s2
• D. 2 m2s2

Explanation: vi=0 ms-1vf=20 ms-1t=10 sa= ?a=vf-vi/ta=20-0/10a=2ms-2