example of newtons second law
Answers
Explanation:
1.) A cricket player lowers his hands while catching the ball.
→ If a player does not lower his hands while catching the ball, the time to stop the ball is very small . So, a large force has to be applied to reduce the velocity of the ball to zero or to change the momentum of the ball. when a player lowers his hands, the time taken to stop the ball is increased
and hence, less force has to be applied to cause the same change in the momentum of the ball.
Therefore, the hands of the player are not injured.
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2.) A Boxer moves his head back ward when his opponent blows a punch .
→ When one boxer blows a punch on the face of another player, then the change in momentum of the punch on striking the face of another player exerts a large force on his face.
On the other hand, when the boxer moves his head back ward, then the change in momentum of the punch of the opponent player takes place in a large interval of time.
Hence, the impact of the punch (i.e , force) on the face of the boxer is very less .
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