Question

if the mass of a car is 200kg.how much work will be done to increase its velocity from 36km\h to 72km\h​

Answer 1

Answer:

Since the velocity remains the same, we cannot make use of the kinetic energy to find the work done. In those questions, we make the use of potential energy of the body to find the work done. The work done is given as the difference of the initial and the final potential energies.

Answer 2

refer to the attached image for solution ✨