Problem 2-43 - Free fall - Part 2 (c)

A baseball pitcher throws a ball vertically straight upward and catches it \(4.2 \;s\) later. (a) With what velocity did the ball leave the pitcher's hand? (b) What was the maximum height reached by the ball?

Correct!

The acceleration is always down.

In this problem we know at the beginning:

(A)   \(\mathrm{t, v_{0_y}, y}\)

(B)   \(\mathrm{a, t, y}\)

(C)   \(\mathrm{t, a}\)