A body of mass ‘M’ collides against a wall with a velocity 𝑣 and retraces its path with the same speed. The change in momentum is (take initial direction of velocity as positive)

May 10, 2022

by Ezee_Notes

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Physics Problems

Question: A body of mass ‘M’ collides against a wall with a velocity 𝑣 and retraces its path with the same speed. The change in momentum is (take initial direction of velocity as positive)

(A) Zero

(B) 2𝑀𝑣

(D) −2 𝑀𝑣

Answer: Option (D)

Solution:

A body of mass ‘M’ collides against a wall with a velocity 𝑣 and retraces its path with the same speed. The change in momentum is (take initial direction of velocity as positive)