A 275 kg motor cycle and rider accelerate from rest and reach a velocity of 20 m.s-¹ west. The motor cycle wheels exert an average force of 710 N east on the road. a) Calculate the minimum time taken to reach a velocity of 20 m.s¹ west. b) Explain how the force directed east causes the motorcycle to accelerate west. c) Explain why it is necessary to specify a minimum time.​