A ball of mass 2.0 kg is thrown vertically upward from the topof a building. The ball’s velocity v is given as a function of timet by the equation v(t) = 2 - 10t .The positive direction isupward.

1) If the ball reaches the ground at t = 2.0 s, what is theheight of the building?

2) At what time does the ball reach maximum height above thebuilding?

3) What is the ball’s acceleration at time t = 1.5 s?