334 bytes added
, 05:34, 3 June 2015
1. A car is moving with uniform velocity of 15m/s. What is the kinetic energy of a boy of mass 40kg sitting in a car?
Solution: data m=40kg and v=15m/s
Velocity of the boy = velocity of the car
Kinetic energy possessed by the boy = (1/2)mv2
=(1/2)*40*15
=4500J