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A highly elastic ball moving at a speed of 3 m/s approaches a wall moving towards it with a speed of 3 m/s. After the collision, the speed of the ball will be

a)

3 m/s

b)

6 m/s

c)

9 m/s

d)

Zero


Question ID - 100100 | Toppr Answer

A highly elastic ball moving at a speed of 3 m/s approaches a wall moving towards it with a speed of 3 m/s. After the collision, the speed of the ball will be

a)

3 m/s

b)

6 m/s

c)

9 m/s

d)

Zero

1 Answer - 5876 Votes

3537

Answer Key : (c) -

(c)

For elastic collision,  Let speed of the ball be  towards left after collision, then w.r.t. wall, incident velocity = reflected velocity. We get



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