Motion in a Straight Line Class 11 MCQs

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Motion in a Straight Line Class 11 MCQs. We covered all the Motion in a Straight Line Class 11 MCQs in this post for free so that you can practice well for the exam.

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MCQ on Motion in a Straight Line for Students

If no net force acts on a body, then the velocity of the body cannot change. This law is known as

(a) Newton’s First Law of Motion

(b) Newton’s Second Law of Motion

(c) Newton’s Third Law of Motion

(d) None of the above

Option a – Newton’s First Law of Motion

The product of the mass of a body and the acceleration produced equals the ……. acting on it.

(a) force

(b) impulse

(c) torque

(d) kinetic energy

Option a – force

The definition of force can be started from

(a) Newton’s First Law of Motion

(b) Newton’s Second Law of Motion

(c) Newton’s Third Law of Motion

(d) Newton’s Law of Gravitation

Option b – Newton’s Second Law of Motion

Two bodies A and B are moving with equal velocities. The mass of B is doubled that of A. In this context, which one of the following statements is correct?

(a) The momentum of B will be double that of A.

(b) Momentum of A will be double that of B.

(c) Momentum of B will be four times that of A.

(d) Momentum of both A and B will be equal.

Option a – The momentum of B will be double that of A

Which scientist gave ‘Laws of motion’?

(a) Galileo

(b) Newton

(c) Einstein

(d) Boyle

Option b – Newton

Newton’s first law of motion is known as

(a) Gravity

(b) the Law of Inertia

(c) the Law of Conservation of Momentum

(d) Vertical Motion

Option b – the Law of Inertia

According to the Second Law of Motion, for a given force, acceleration is inversely proportional to the …….. of an object.

(a) density

(b) volume

(c) force

(d) mass

Option d – mass

The Second Law of Motion states that

(a) Every object will move in a uniform motion when a net force is applied.

(b) The rate of change of momentum of an object is proportional to the net force applied on the object in the direction of the net force.

(c) Every object will remain at rest or in a state of uniform motion unless compelled to change its state by the action of a net force.

(d) The rate of change of speed of a body will change with the net force applied.

Option b – The rate of change of momentum of an object is proportional to the net force applied on the object in the direction of the net force

A body of mass 4 kg accelerates from 15 m/s to 25 m/s in 5 seconds due to the application of a force on it. Calculate the magnitude of this force (in N).

(a) 32

(b) 8

(c) 16

(d) 64

Option b – 8

Two persons are holding a rope of negligible mass horizontally. A 20 kg mass is attached to the rope at the mid-point, as a result, the rope deviates from the horizontal direction. The tension required to completely straighten the rope is (g = 10 m/s²)

(a) 200 N

(b) 20 N

(c) 10 N

(d) infinitely large

Option a – 200 N

The rate of change of momentum of a body is equal to the resultant

(a) energy

(b) power

(c) force

(d) impulse

Option c – force

Find the acceleration (in m/s) produced in a body of mass 3 kg when a force of 6 N is applied to it.

(a) 18

(b) 4

(c) 2

(d) 36

Option c – 2

Which of the following quantity is a measure of inertia?

(a) Velocity

(b) Acceleration

(c) Mass

(d) Weight

Option c – Mass

Which one of the following has maximum inertia?

(a) An atom

(b) A molecule

(c) A one-rupee coin

(d) A cricket ball

Option d – A cricket ball

When a running car stops suddenly, the passengers tend to lean forward because of

(a) centrifugal force

(b) inertia of rest

(c) inertia of motion

(d) gravitational force

Option c – inertia of motion

Which of the following is an example of inertia of rest?

(a) When a hanging carpet is beaten with a stick, dust particles are cleared.

(b) Mud flying tangentially to the type of car.

(c) An athlete runs some distance before taking a long jump.

(d) None of the above

Option a – When a hanging carpet is beaten with a stick, dust particles are cleared

Momentum is measured as the product of

(a) mass and acceleration

(b) mass and acceleration

(c) mass and velocity

(d) mass and inertia

Option c – mass and velocity

When a ball bounces off the ground, which of the following changes suddenly? (Assume no loss of energy to the floor)

(a) Its speed

(b) Its Momentum

(c) Its kinetic energy

(d) Its potential energy

Option b – Its Momentum

A body of mass 8 kg is moving with a velocity of 4 m/s. Find its momentum.

(a) 2

(b) 64

(c) 32

(d) 4

Option c – 32

Force is a push

(a) that can change the position and direction of motion of a body

(b) that can change the position and cannot change the direction of motion of a body.

(c) which can change the shape of the body only.

(d) None of the above

Option a – that can change the position and direction of motion of a body

Which one of the following is not a contact force?

(a) Push force

(b) Gravitational force

(c) Frictional force

(d) Strain force

Option b – Gravitational force

The electrostatic force is

(a) the force exerted by a charged body.

(b) the force exerted by gravity.

(c) example of a contact force.

(d) None of the above

Option a – the force exerted by a charged body

The nuclear force is

(a) a very short-range attractive force.

(b) the strongest force in nature.

(c) noncentral forces.

(d) All of the above

Option d – All of the above

The tendency of undisturbed objects to stay at rest or to keep moving with the same velocity is called

(a) velocity

(b) force

(c) momentum

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(d) inertia

Option d – inertia

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