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A small (25 g) high-bounce ball is stacked on top of a large (100 g) high-bounce...

A small (25 g) high-bounce ball is stacked on top of a large (100 g) high-bounce ball, and the two balls are dropped to the floor together from a height of 2 m. The large ball strikes the floor first and rebounds upward to collide with the falling small ball. At the instant of the collision, the large ball has a velocity of 4.4 m/s upward, and the small ball has a velocity of 4.4 m/s downward. If the collision between the two balls is perfectly elastic, how fast is each ball moving immediately after impact?

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