A truck and a car are moving with the same kinetic energy on a streight road. Their engines are simultaneously switched off. Which one will stop at a distance?

A truck and a car are moving with the same kinetic energy on a streigh

1.	A truck and a car are moving with the same kinetic energy on a streight road. Their engines are simultaneously switched off. Which one will stop at a distance?
Answer» Solution :CHANGE in KE = work done by the force of FRICTION = Fs = `mu Ns = mu mgs` `therefore s = "change in KE"/(mumg)` For a constant change in KE, stopping distance `s= prop 1/m`. Since the TRUCK is more massive, it will STOP in a lesser distance.