5.

5. [6 pts] Scott throws his math textbook vertically from the edge of a cliff and watches as it goes up and then falls into the ocean below. The height of the book above the water (in meters) is a function of time and is given by h(t) = -4.9t2 +34t + 118, where t is in seconds. a. Find the velocity of the book after 5 seconds. Is the book rising or falling at this point? How do you know? b. Find the acceleration of the book at any time t. c. Find the velocity of the book when it hits the surface of the water