A girl throws a ball with initial velocity v at an inclination of $45^{0}$ . The ball strikes the smooth vertical wall at a horizontal distance d from the girl and after rebounding returns to her hand. What is the coefficient of restitution between wall and the ball?

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Solution

The correct option is C 1
If the ball is retracing its path that means speed just before collision and just after collision was equal and that means elastic collision.(e=1)
Option C

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A girl throws a ball with initial velocity v at an inclination of 450. The ball strikes the smooth vertical wall at a horizontal distance d from the girl and after rebounding returns to her hand. What is the coefficient of restitution between wall and the ball?

The correct option is C 1If the ball is retracing its path that means speed just before collision and just after collision was equal and that means elastic collision.(e=1)Option C

A girl throws a ball with initial velocity v at an inclination of $45^{0}$ . The ball strikes the smooth vertical wall at a horizontal distance d from the girl and after rebounding returns to her hand. What is the coefficient of restitution between wall and the ball?

The correct option is C 1
If the ball is retracing its path that means speed just before collision and just after collision was equal and that means elastic collision.(e=1)
Option C