阿摩線上測驗
32. A cannonball of mass 10.0 kg is fired upward. The cannonball explodes into 3 pieces when it reaches the maximum height. At the moment of explosion, a 5-kg piece carries velocity
while another 4-kg piece carries velocity
. What is the velocity 
of the third piece?
(A) Cannot be determined without knowing the energy provided by the explosion
(B)
(C)
(D)
(E)
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統計： A(0), B(0), C(0), D(1), E(23) #3084491
統計： A(0), B(0), C(0), D(1), E(23) #3084491
