The driver of a car travelling at velocity v suddenly see a broad wall in front of him at a distance d . He should

Step-by-step solution

When driver applies brakes and the car covers distance x before coming to rest, under the effect of retarding force F . Then aligned 1 2 m v² &=F x x &= m v² 2 F aligned or But when he takes turn, then aligned m v² r &=F r &= m v² F aligned It is clear that x= r 2 ie, by the same retarding force the car can be stopped in a less distance if the driver apply brakes. This retarding force is actually a friction force.