Question

The kiknetic energy of mass moving with a velocity of 5m/s os 25joule. What will be its kinetic energy when its velocity is increased 3times

Answer 1

Answer:

Explanation:

KE =1/2*MV^2

When velocity is increased 3 times

KE'=1/2 * M(3V)^2

》KE'=9*1/2 M V^2

》KE'=9*KE

:. KE'=9*25=225 J