Question

Calculate the work required to be done to stop a car of 1500kg moving at a velocity of 50km/hr

Answer 1

Here is your answer user .

Answer 2

Answer:

Mass = 1500 kg

Velocity = 50 km/h

= 125/9 m/s

Kinetic energy = 1/2 × mv^2

= 1/2 × 1500 × 125/9 × 125/9

= 125 × 125 × 750/81

= 144675.92

Work done = change in kinetic energy

Thus, work done = 144675.92 J