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Two balls, of masses ma = 45 g and mg = 65 g, are sus-
pended as shown in Fig. 7–46. The lighter ball is pulled away
to a 66° angle with the vertical and released. (a) What is
the velocity of the lighter ball before impact? (b) What is
the velocity of each ball after the elastic collision? (c) What
will be the maximum
height of each ball after
the elastic collision?
66°
(A
35 сm
FIGURE 7-46
AB
Problem 78.
mĄ mB

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