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Assertion: A player lowers his hands whi...

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

If both assertion and reason are true and the reason is the correct explanation of the assertion

B

If both assertion and reason are true but reason is not the correct explanation of the assertion

C

If assertion is true but reason is false.

D

If the assertion and reason both are false.

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The correct Answer is:
A
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Explain why a player lowers his hands while catching a cricket ball.

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

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?

To catch a fast cricket ball, a player pulls his hands backwards. 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.

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 .

While we catch a cricket ball, we catch it at the fornt and make the hands move with the ball backwards. Why is that ? .

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