Problem 2-43 - Free fall - Part 6 (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?

No. \(\mathrm{v_y{^2}- v_{0_y}{^2} = 2a_yy}\) while true, leads nowhere since it doesn't involve the time \(\mathrm{t.}\) With \(\mathrm{y = 0}\) it simply says that \(\mathrm{v_y{^2} - v_{0_y}{^2} = 0}\) or \(v_y = v_{0_y}\) which we already know.
 
 

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