put, the more energy you can recapture and reuse, the less you have to carry.
accelerate a vehicle, you turn your stored energy (gas in an ICE, battery
charge in an EV) into kinetic energy. To slow the car down, you need to
do something with this energy.
method is to use friction to release the energy as heat. The brake pads
press on the brake rotor, and the energy is lost as heat.
is to turn your electric motor as an electric generator, and recapture
some of your kinetic energy as electricity. This can put the energy back
in your battery to be used to accelerate again.
are running your vehicle in a race situation, where lots of hard accelerations
are followed by hard decelerations, recapturing that energy can be a big