Question

State Newton's 2nd law of motion. Explain why does a player
withdraws his hands after catching the ball.​

Answer 1

Newton’s second paw of motion f=na

Answer 2

Physics for Class 9 - Motion

Newton's Second Law of Motion

Newton's second law of motion states that the rate of change of momentum is directly proportional to the force applied in the direction of the force.

Mathematical Expression:

F= ma

(here, force= F, m= momentum, a = acceleration)

Explain why does a player  withdraw his hands after catching the ball.

A player moves his hands backward to catch a fast moving ball to prevent injuries.

Explanation:

A fast moving ball has great momentum and in order to catch it, the momentum has to be reduced to 0. When the hands are taken backward, the time taken is reduced and also prevents injury from the fast moving ball hitting the hand.

Know more about Newton's second law of motion:

→ Newton's second law measures force.

→ It is also known as Law of Force and Acceleration.

→ Newton presented all these 3 laws in the book "Principia Mathematica Philosophiae Naturalis" in 1686.