Kinematics Question 492
Question: The driver of a car travelling at velocity v suddenly see a broad wall in front of him at a distance d. He should [IIT 1977]
Options:
A) Brake sharply
B) Turn sharply
C) (a) and (b) both
D) None of the above
Show Answer
Answer:
Correct Answer: A
Solution:
When driver applies brakes and the car covers distance x before coming to rest, under the effect of retarding force F then
therefore
But when he takes turn then
therefore
It’s clear that
this retarding force is actually a friction force.
