Question

A ball of mass 200grams falls from height of 5metres what is its kinetic energy when it reaches the ground

Answer 1

Explanation:

K.E= mgh

Or K.E = 0.2 × 5 × 10

(g= 10m/s²)

K. E= 10J

Law of conversation of energy(Enery is neither created nor destroyed, it can only be changed from one form to other)

• K. E is inversely proportional to P. E

So,when it reaches the ground K.E = 0

Then P.E = 10J