Question

2.
Explain why rolling friction is less than sliding friction.
3. Nitika is getting late and so she drives her car in high speed. Suddenly, she sees a smalle
crossing the road. She immediately applies brakes and saves the child.
(a) What happens when we apply brakes?​

Answer 1

Answer:

2:

Sliding friction is the force that acts against two surfaces that are rubbing together. Rolling friction is less than sliding friction as the rolling of one body over another requires a smaller area of surface contact than sliding.

3:

she stops the car to save the child that means that she cares for the child and would have

felt guilty if the car had hurt the child.......

she didn't want the child to get any kind of hurt...

a:When we apply brakes, friction will be produced between tires and brakes . When we apply brakes, the friction between the surface of the road and the tyre of the vehicle is increased and hence the vehicle stops.