A body of weigh 300n climb to the 10 pair of a will of weigh 20m what is the work force by the body a gravity the force
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Explanation:
. A boy of weight, 300N climb's to the top of a hill of weight 20 m. The work done by the boy against the force of gravity is:
2. A body initially at rest is accelerated at the rate of 0.2 metre per seconds square for 5seconds under a constant force of 50N.the work done on the body is
3. An object of mass 20kg is released from a height of 10m above the ground level. The kinetic energy of the object just before it hits the ground is:
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