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# We can use the textbook results for head-on elastic collisions to analyze the recoil of the...

## Question

###### We can use the textbook results for head-on elastic collisions to analyze the recoil of the...

We can use the textbook results for head-on elastic collisions to analyze the recoil of the Earth when a ball bounces off a wall embedded in the Earth. Suppose a professional baseball pitcher hurls a baseball (m = 155 grams = 0.155 kg) with a speed of 103 miles per hour (vball = 45.3 m/s) at a wall, and the ball bounces back with little loss of kinetic energy. (a) What is the recoil speed of the Earth (M = 6multiply1024 kg)?

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