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Q. A 0.15 kg pool ball moving in the + direction collides with another pool ball. The collision lasts 50 ms, and the average impulsive force on the first ball is -12 + 9.2 N. If the initial velocity of the first pool ball is what is the magnitude of its velocity after the collision?

Q. A soccer player applies a force of 60.5 N to a soccer ball while kicking it. If the ball has a mass of 0.42 kg, what is the acceleration of the soccer ball?

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