Question

calculate the work required to be done to stop a car of 1500 kg moving at a velocity of 60 km per hour??

Answer 1

work= force x displacement
now,force = m xa
1500 x 150/18
work = 1500 × 150/8 x 1000

Answer 2

Hey there!

Given,

Mass of car (m) = 1500 kg

Velocity of car ( v) = 60 km/h = 60 * 5/18 m/s

Work done = ?

Here,

Work done = Kinetic Energy

                  = 1/2 * mv²

                  = 1/2 * 1500 * 60 * (5/18) J

                  = 20.8 × 10⁴ J (←Answer)

Hope It Helps You!