Mu kukyusa eng’enda ekigambo okutebenta (accerelation) we kijjira. Okutebenta nakyo kipimo kya kigendo (vector). Twogera ku kwongeza emisinde singa okutebenta n’eng’enda biba bisonze mu ludda lwe lumu. Mu kukendeeza emisinde (decereration) singa okutebenta n’eng’enda biba bisonze mu ludda olwa kikontana oba kiyite obwolekero obwa kikontana (opposite direction). Bw’otebenta oba n’okendeeza emisinde oba okyuusa eng’enda yo mu kipimo ekigere ku kiseera ekigere. Okukendeeza emisinde kuba kutebentuka(deceleration)