Question

what work is done to increase velocity of car 30km/hr to 90km/hr. mass =150 kg

Answer 1

Answer:

Example 11.4 What is the work to be done to increase the velocity of a car from 30 km h–1 to 60 km h–1 if the mass of the car is 1500 kg? × 1500 kg × (25/3 m s–1)2 = 156250/3 J. The final kinetic energy of the car, Ekf = 1 2 × 1500 kg × (50/3 m s–1)2 = 625000/3 J.