Kinetic energy is the energy an object possesses due to
it's motion. A vehicle in motion has more kinetic energy
than one at rest. Every time
you want to stop your car you must overcome the kinetic
energy your vehicle has built up.
when you double a vehicles speed the kinetic energy quadruples.
If you double it's weight it doubles the kinetic energy
(like the momentum equation). See the formula below:
Kinetic Energy =
1/2*Mass*Velocity Squared = (1/2)mv^2
Don't worry about
remembering this formula. Just remember that due to
Kinetic Energy your braking distance is four times as great
if you double your speed .