Question

A father and a son pushed their car to bring it to the side of the road as it had stalled in the middle of the road. They experienced that although they had to push with al,their might initially to move the car the push required to keep the car rolling was smaller once the car started rolling. Explain

Answer 1

See below

Step-by-step explanation:

This is likely due to the difference between STATIC friction and KINETIC friction coefficients.

Static friction is higher....it takes more work to get the car moving from rest......then kinetic friction is less and it takes less effort to move the car after it has started moving.

There is also INERTIA ... an object at rest tends to stay at rest unless acted upon by a force....and an object in motion tends to remain in motion unless acted upon by a force .