A truck of mass 3000 kg is to be loaded onto a ship by a crane that exerts an upward force of 31.0 kN (kilo Newtons) on the truck. This force, which is just strong enough to get the truck started upward, is applied over 2.00 m. Find (a) the work done by the crane, (b) the work done by gravity, and (c) the upward speed of the truck after 2.00 m.
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when the truck in the 1hour so the work done at 12 hours
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