A batter hits a baseball with mass 0.146 kilogram straight upward with an initial speed of 26.0 m/s.
(a) Find how much work has gravity done on the baseball when it reaches a height of 15.5 meter above the bat?
J
(b) Use the work-energy theorem to determine the speed of the baseball at a height of 15.5 meter above the bat. You can ignore air resistance.
m/s