Explain why a player lowers his hands while catching a cricket ball.

Impulse of a force measures the effect of the force. It is the product of force (F) and time (t) for which the force acts. Mathematically, impulse =Fxxt . It is equal to change in linear momentum of the body. For a given change in linear momentum, Fxxt=constant . If t increases, F decreases and vice-versa. For example, a player lowers his hands while catching a cricket ball. This would be increase t the time of catch. Therefore, F would reduce, i.e., his hands will not get hurt badly. Read the above passage and answer the following questions: (i)Why is crockery wrapped in straw or papers etc.? (ii) Why are vehicles like scooter, car, bus, trucks provided with shockers? (iii)What message does this paragraph give you for your day to day life?

Assertion: A player lowers his hands while catching a cricket ball and suffers less reaction force. Reason: The time of catch increases when cricketer lowers hand while catching a ball.

A cricket player lowers his hands while catching a ball . Why ?

(a) Explain why, a cricket player moves his hands backwards while catching a fast cricket ball (b) A 150 g ball, travelling at 30 m/s, strikes the palm of a player's hand and is stopped in 0.05 second. Find the force exerted by the ball on the hand.

Explain why A has lower point than B ?

A cricket player draws his hands backwards through 10 cm while catching a ball of mass 150 g moving with a velocity of 25 ,ms^(-1) . Calculate the work done in catching the ball and the average force exerted by the ball on the hand .

Explain why? (a) a horse cannot pull a cart and run in empty space. (b) passengers are thrown forward from their seats when a speeding bus tops suddenly (c) It is easier to pull a lawn mower than to push it. (d)a cricketer moves his hands backwards while holding a catch

Why do kabaddi players rub their hands with dry soil ?