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Starting with an initial speed of 5.00 m/s at a height of 0.335 m, a 1.75-kg ball swings downward and strikes a 4.40-kg ball that is at rest, as the drawing shows.
(a) Using the principle of conservation of mechanical energy, find the speed of the 1.75-kg ball just before impact.

(b) Assuming that the collision is elastic, find the velocities (magnitude and direction) of both balls just after the collision.
m/s (1.75 kg-ball)
m/s (4.40 kg-ball)

(c) How high does each ball swing after the collision, ignoring air resistance?
m (1.75 kg-ball)
m (4.40 kg-ball)

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