Asked by Rachel

Block A (mass = 3 kg), moving at +5 meters per second, collides with stationary block B (mass = 4 kg). Block A comes to a sudden stop, while block B starts moving. What will be the approximate final speed of block B?
Answered by Steve
conserve momentum:

3*5 + 4*0 = 3*0 + 4v
Answered by brandon
3.8
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