In two different experiments, an object of mass 5   kg moving with a speed of 25   ms - 1 hits two…

In two different experiments, an object of mass 5 kg moving with a speed of 25 ms-1 hits two different walls and comes to rest within
(i) 3 second, (ii) 5 seconds, respectively.
Choose the correct option out of the following :
  1. Impulse and average force acting on the object will be same for both the cases.
  2. Impulse will be same for both the cases but the average force will be different.
  3. Average force will be same for both the cases but the impulse will be different.
  4. Average force and impulse will be different for both the cases.

Solution

Impulse = Change in momentum

I=ΔP

Therefore, in both the cases the impulse is same.

Average force is defined as,

Favg =ΔPΔt

Since the time in the two cases is different, the average force will be different.

Asked in: JEE Main 2022 (28 Jul Shift 1)

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