# Answer to Question #21644 in Mechanics | Relativity for sajida

Question #21644

an object of mass m is dropped from a height h.what is the kinetic energy when it touches the ground?"

Expert's answer

T+U=E=const - The law of conservation of energy

T - kinetic energy

U - potential energy

E - total energy

when the object is dropped:

E=0+mgh

m - mass oа the body

h - height

when it touches the ground

E=T+0

T+0=0+mgh

T=mgh

T - kinetic energy

U - potential energy

E - total energy

when the object is dropped:

E=0+mgh

m - mass oа the body

h - height

when it touches the ground

E=T+0

T+0=0+mgh

T=mgh

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