When the ball bounces back toward you what is its speed

Reference no: EM13655210

A charging bull elephant with a mass of 5240-kg comes directly toward you with a speed of 4.55m/s. You toss a 0.150-kg rubber ball at the elephant with a speed of 7.81m/s (a) When the ball bounces back toward you, what is its speed ?(b) how do you account for the fact that the ball's kinetic energy has increased?

Reference no: EM13655210

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