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

Solution: Kinetic energy, E k= 1/2 mv^2
Where,
Mass of car, m= 1500 kg
Velocity of car, v= 60 km/hr= (60 — 5 )/(18 ms^(-1) )

ˆ´ E k= 1/2 — 1500 — €–(60 — 5/18)€—^2 = 20.8 —€–10€—^4 J

Hence, 20.8 — 104 J of work is required to stop the car.

Leave a Comment

Your email address will not be published. Required fields are marked *