Question

During the training, Sahil's cricket coach taught him to pull his hands backwards while catching a fast moving cricket ball.
(a) Is Sahil's coach correct ?
(b) Why does a fielder in the ground gradually pull his hands backwards with the ball while catching a fast moving cricket ball ?
(c) What would happen if a fielder does not take the advice properly ?
(d) What is the value associated with it?

CBSE Class IX Science LA (5 Marks)

Answer 1

. (a) Yes.

(b) While catching a fast moving cricket ball, a fielder pulls his hands backwards with the ball. By 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 the impact of catching the fast moving ball is also reduced. Therefore, the fielder gets less hurt.

(c)  On the contrary, if the ball is stopped suddenly, the high velocity deceases to zero in a very short interval of time. Thus, the rate of change of momentum of the ball is very large. Therefore, large force is applied for holding the catch that may hurt the palm of the fielder.

This shows that Sahil's coach is intelligent and a good trainer.