Question

Assertion: When we sit on a chair, our body exerts a force downward
and that chair needs to exert an equal force upward or the chair will
collapse. Reason: The third law says that for every action there is an equal
and opposite reaction.
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Answer 1

Both assertion and reason are true and reason is the correct explanation of assertion.

Answer 2

Force and Pressure

Both assertion and reason are correct and reason is the correct explanation of assertion.

• According to Newton's third law, whenever objects A and B interact with each other, they exert forces upon each other.
• When we sit in chair, our body exerts a downward force on the chair and the chair exerts an upward force on your body.
• This results in the interaction between our body and chair - a force on the chair by the body and a force on our body by the chair.
• These forces are called action-reaction pair.
• Newton's third law: "Every action has equal and opposite reaction".