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 :

Pick an option to check your answer.

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Answer & Solution

Correct Answer

(B) Impulse will be same for both the cases but the average force will be different.

Step-by-step Solution

Detailed explanation

Impulse = change in momentum

\(I=\Delta P\)

\(F _{\text {aug }}=\frac{\Delta P }{\Delta t }\)

\(\Delta t _{1}=3 \quad \Delta t _{2}=5\)

\(\Delta P _{1}=\Delta P _{2}\)

\(I _{1}= I _{2}\)

\(F _{\text {avg }}\) in case \((i)\) is more than \((ii)\)

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