physic

A workman is working high in a tower when he drops a spanner, mass 500 grams, from a height of 50metres. Assuming g = 10N/kg

Calculate:

a)      The loss of Potential Energy by the spanner as it falls to the ground;

b)      The Kinetic Energy of the spanner as it hits the ground;

c)      The velocity of the spanner as it hits the ground;