A 120-g rubber ball is thrown with a speed of 10 m/s at an oncoming 900-kg car w

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A 120-g rubber ball is thrown with a speed of 10 m/s at an oncoming 900-kg car w

A 120-g rubber ball is thrown with a speed of 10 m/s at an oncoming 900-kg car which is approaching at 30 m/s, and undergoes a one-dimensional elastic collision with the car. What is the speed of the ball after the collision?
A) 10 m/s
B) 30 m/s
C) 40 m/s
D) 50 m/s
E) 70 m/s

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