Two workmen are employed on a building project
i) Workmen 1 drops hammer with force to the ground the hammer has a mass of 2kg and is dropped from a height of 4.8m above the ground
a) Calculate the change in gravitational potential energy of the hammer when at is dropped
b) Describe the energy changes from the time the hammer leaves the hand of workmen 1 until it is at rest on the ground
c) Workmen 2 picks up the hammer and takes it back up the ladder to workmen 1.He climbs the first 3.0m in 5.0s. His total weight, including the hammer is, 520N. Calculate the useful power which his legs are producing.
Answer.... in detail.... please
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was a good day at work now and then I will be there for the first time in the middle
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