Question

Please answer the following questions:
1. Suggest the type of tyres one should use in a car race; The one with friction or without friction.
2. Is it possible that force applied on an object may not bring any change in it?
3. Why is rolling friction less than sliding friction?
Please give me the best answer.

Answer 1

1) with friction to stop slipping

2) yes, it it cannot overcome force of friction or air resistance

3) because in rolling friction the object do not rub on the surface producing less friction

Answer 2

1.with friction
2.yes, like pushing a very heavy stone
3.sliding friction has an inclined angle so the object can move faster.