Multiple Choice
An elevator is moving up with 8 m/s when a bolt came loose from the bottom.The bolt reaches the bottom of the shaft in 4 seconds.The velocity of the bolt at the bottom is
A) 39 m/s.
B) 21 m/s.
C) -31.2 m/s.
D) -47.2 m/s.
Correct Answer:

Verified
Correct Answer:
Verified
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