Question

give reason for the following first if a boy jumps out of a boat the boat moves backwards second the passengers standing in a bus fall backward when the bus starts suddenly solutions​

Answer 1

Explanation:

when a boy jumps out of a boat he applies a force on the ground and according to Newton's law Every action has an equal and opposite reaction so, the ground applies force on the boat and hence it moves backward

when a person is standing in a bus he and boat both posses inertia of rest. The person's legs are in contact with the bus but when the bus moves the body still want to stay in the state of rest due to inertia of rest so he tends to fall backward.

Answer 2

This all happened because of torque which is exertred in opp . Direction of their motion

As Newton third law states that every action is equal and opposite reaction when bus is at rest initially then ur upper and lower body is at rest but when suddenly it moves ur upper body move due to torque exerted by bus but lower body is at rest ..