Question

A car and truck are moving with same kinetic energy. Equal retarding forces are applied on both of these using brakes. The distances travelled by them before coming to rest:

• A. Are equal for both
• B. Is greater for the car
• C. Is greater for the truck
• D. None of the above

Answer 1

The correct option is A Are equal for both

As the KE is equal for both vehicles amount of work to be done to stop them is same.
As same F is applied on both vehicles and $W=\overrightarrow{F}\cdot \overrightarrow{s}$, they both travel equal distance before stopping