CPM Homework Help : CALC Problem 5-95

Hint (a):

$s(t)=\frac{1}{2}at^{2}+v_{0}t+s_{0}$

Hint (a):

Find s(t). Then find v(t).

Answer:

s(t) = −16t² + 144t + 0
v(t) = −32t + 144

Hint (b):

The ball is at rest whenever the velocity is equal to zero. What is happening to the ball at these times?

Hint (c):

Remember that the ball has a velocity of zero at the peak of its parabolic flight.