Question

A lorry and a car moving with the same K.E. are brought to rest by applying the same retarding force, then

• A. Lorry will come to rest in a shorter distance
• B. Car will come to rest in a shorter distance
• C. Both come to rest in a same distance
• D. None of the above

Answer 1

The correct option is C

Both come to rest in a same distance

Stopping distance = $\frac{kineticenergy}{retardingforce}\Rightarrow s=\frac{1}{2}\frac{m{u}^2}{F}$

If lorry and car both possess same kinetic energy and retarding force is also equal then both come to rest in the same distance.