Question

calculate the work required to be done to stop a car of 1500kg moving at a velocity of 60km/h

Answer 1

Answer:

Explanation:

work done=change in kinetic energy

kinetic energy=1/2mv^2

m=1500kg

v=60 kmph=16.6667 m/s

ke=0.5*1500*(16.6667)^2=208334.1667 joules

Answer 2

Work done =1/2 mv²

=1/2 * 1500 * 60 * 60

= 750*3600

=2700000 joules.