Normal Reaction between Ground and Rear Wheel is the upward force exerted by the ground on the rear wheel of a vehicle, opposing its weight. And is denoted by RB. Normal Reaction between Ground and Rear Wheel is usually measured using the Newton for Force. Note that the value of Normal Reaction between Ground and Rear Wheel is always positive. Typically, the value of Normal Reaction between Ground and Rear Wheel is greater than 0.