Q. A truck and a car are moving with equal velocity. On applying the brakes both will stop after certain distance, then
A) Truck will cover less distance before rest
B) Car will cover less distance before rest
C) Both will cover equal distance
D) None
Explanation
(c) Stopping distance$= \frac{Kinetic\ energy\ }{Retarding\ force} = \frac{\frac{1}{2}mu^{2}}{F}$
$= \frac{u^{2}}{2\mu g}\lbrack F = \mu mg\rbrack$
So both will cover equal distance
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.