# deceleration_distance

deceleration_distance(speed,friction)
Returns the distance travelled by an object moving at a given speed and with a given rate of deceleration.
COPY/// deceleration_distance(speed,friction)
//
//  Returns the distance travelled by an object moving at
//  a given speed and with a given rate of deceleration.
//
//      speed       speed, real
//      friction    deceleration rate, real
//