Question

A ball of mass 20kg is thrown up with a speed of 18m/s. find the kinetic energy of the ball at the time of throwing.

Answer 1

Answer:

Explanation:

mass(m)=20kg

speed(v)=18m/s

Kinetic energy=1/2mv^2

so we must substitute the values in the formulae

                     =1/2*20*18

                     =180J

                      Therefore kinetic energy of the ball at the time of throwing is equal to 180J