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標題:
physics
發問:
a truck of mass 100kg is to loaded onto a ship using a crane that exerts a force of 31 kN over a displacement of 2 m. find the upward speed of truck after its displacement.
最佳解答:
Assume no energy loss, Input energy=output energy Fs=KE 31*1000*2=100*vv/2 v=35.2m/s
其他解答:
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