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A 20-lb projectile is moving with a velocity of 100 ft/s when it explodes into two fragments ? and ? , weighing 5 lb and 15 lb respectively. Knowing that immediately after the explosion, fragments ? and ? travel in directions shown,determine the velocity of each fragment.

VA
A
Vo = 100 ft/s
5 lb
20 Ib
45°
30°
15 lb
B
VB

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