Question

A passenger getting down from a moving bus falls in the direction of the bus. This is an example of
A. Second law of motion
B. Third law of motion
C. Inertia of rest
D. Inertia of motion

Answer 1

Hint:Here we have to understand first what is second law of motion, third law of motion, inertia of rest and inertia of motion. Then we can conclude the answer.

Complete step by step solution:
First let us see about the laws of motion-
There are three laws of motion which are known as the Newton’s laws of motion. The first law states that a physical quantity called force is required to push and pull an object from its state of rest. An object will not change its position unless compelled to do so. Newton’s second law states that force is directly proportional to mass and acceleration. So force is equal to mass times acceleration. Newton’s third law states that every action has an equal and opposite reaction.

Inertia of rest-
The inclination of a body at rest to remain at rest or of a body in motion to continue to travel at a constant pace along a straight line until a force is applied to it is known as inertia of rest. It is also known as the first law of motion.

Inertia of motion-
The fundamental property of a body due to which it cannot change its state of motion is called inertia of motion.
A passenger getting down from a moving bus falls in the direction of the bus. This is because on hitting the ground, the passenger’s feet come to rest and due to inertia of motion the remaining part of the body falls.

Note:
Mass is the physical quantity that is entirely dependent on an object’s inertia. The more inertia an object possesses the more mass it has. A body with greater mass is able to withstand and resist inertia of motion.