Question

What is the work to be done to increase the velocity of car from 30km/h to 60km/h if the mass of car is 1500kg

Answer 1

Work = Change in kinetic energy 
= 0.5 m (v² - u²)
= 0.5 × 1500 kg × [(60 × 5/18 m/s)² - (30 × 5/18 m/s)²]
= 156250 joules
= 156.25 kJ

Work done is 156.25 kJ

Hope This helps :)

Answer 2

this may help you have a nice day