Question

A person sitting in a car which is at rest. The reaction from the road at each of the four wheels of the car is R. When the car runs on a straight level road, how will the reaction at either of the front wheels vary?
A) It will greater than R
B) it will be less than R
C) it will be equal to R
D) it shall depend on the material of the road
PLEASE EXPLAIN YOUR ANSWER
URGENT

Answer 1

Ans. C) it will be equal to R

Kinetic friction also known as dynamic or sliding friction occurs when a body is in relative motion with another with their surface in contact. It is the friction force that slow down and eventually stops a moving object. So, dynamic friction in any object is proportional to instant reaction and it is less than static friction. When a car turns on a straight level road, the normal reaction either of the front wheels will be equal to R