Question

why cricket player lowers his hands while catching a cricket ball?

Answer 1

ANSWER -->
Newtons Second Law states that the rate of change of momentum of an object is proportional to the applied unbalanced force in the direction of force.

The second law of motion gives us a method to measure the force acting on an object as a product of its mass and acceleration.

i.e:- F = ma . ( force = mass × acceleration )

while catching a fast moving cricket ball, a fielder in the ground gradually pulls his hands backwards with the moving ball. In doing so, the fielder increases the time during which the high velocity of the moving ball decreases to zero. Thus, the acceleration of the ball is decreased and therefore the impact of catching the fast moving ball is also reduced. If the ball is stopped suddenly then its high velocity decreases to zero in a very short interval of time. Thus, the rate of change of momentum of the ball will be large. Therefore, a large force would have to be applied for holding the catch that may hurt the palm of the fielder.

Hopes this helps you!

Answer 2

Answer:

While catching a ball, a cricket player lowers his hands, because by doing so, he increases the time of catch. That is, the person increases the time to bring about a given change in momentum, and hence rate of change of momentum decreases. Thus, a small force is exerted by ball on the hands.