A mass m with velocity u strikes a wall normally and returns with the same speed. What is…
Physics · JEE Main · NTA Exams — Laws of Motion
A mass m with velocity u strikes a wall normally and returns with the same speed. What is magnitude of the change in momentum of the body when it returns
- 4 mu
- mu
- 2 mu
- zero
Answer
(C) 2 mu
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