14) The height, h metres, of a ball projected directly upwards from the ground can be modelled by h = 56t - 71, where t is the t
ime in seconds after it leaves the ground. a) Find the height of the ball 3.5 seconds after it leaves the ground. b) At what time will the ball strike the ground again? c) When will the ball be 49 m above the ground? Briefly explain why there are two possible answers.
