JEE Main Physics question

**Statement 1:** When a ball of mass m hits a wall normally with a velocity v and rebounds with the same velocity, the impulse imparted to the ball is 2mv. **Statement 2:** Impulse = change in linear momentum.

(A)Statement 1 is true, Statement 2 is true; Statement 2 is a correct explanation for Statement 1Correct
(B)Statement 1 is true, Statement 2 is true; Statement 2 is not a correct explanation for Statement 1
(C)Statement 1 is true, Statement 2 is false
(D)Statement 1 is false, Statement 2 is true

Answer: (A)

Solution

Taking the initial direction as positive, Δp = mv − (−mv) = 2mv. Statement 2 states

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Question ID VK-152975