are you talking about charging the battery or actually powering the electric motor via electromagnetic waves coming from the road? electromagnetic waves cannot efficiently transfer substantial amounts of energy from...

people underestimate the energy dissipated when braking. a 300kW v8 car can stop alot quicker than it takes off. yes the brakes are almost always more powerfull than the engine....

The coloured triangle with the least area has a concave hypotenuse (check the gradient of each triangle). However the triangle with extra area has a convex hypotenuse.