Calculate the kinetic and potential energies for a 2 kg mass dropped vertically

Question

Calculate the kinetic and potential energies for a 2 kg mass dropped vertically downward from a height of 176.4 m at 2 second intervals for the first seconds of it's fall (t=2,4,6)
Compute the total mechanical energy for each of the four instants in time indicated.
What can you say about the total mechanical energy of the object dropped?
If a 85.2kg man jumps from the second floor window of a burning building 7.5 m above the ground using conservation of energy relationship... calculate the velocity which he will strike the ground.

Explanation / Answer

velocity of man falling=12.247 m/sec total mech energy reamins constant=3528 J

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