Question

How does kinetic energy affect the stopping distance of a vehicle traveling at 30 mph compared to the same vehicle traveling at 60 mph?

Answer 1

As K.E=1/2mv^2,
Even when the mass remains constant,The kinetic energy of the vehicle remains to be high as it is directly proportional to the square the velocity of the object.Thus a vehicle with higher velocity will take a long time to stop than a vehicle of a considerably lower speed.