A 0.100-kg ball collides elastically with a 0.300-kg ball that is at rest. The 0.100-kg ball was traveling in the positive x-direction at 7.80 m/s before the collision. a) What is the velocity of the 0.300-kg ball after the collision? If the velocity is in the –x-direction, enter a negative value.   b) What is the velocity of the 0.100-kg ball after the collision? If it is in the –x-direction, enter a negative value.

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