Question

a baseball is thrown straight up into the sky. what type(s) of energy is (are) present when the baseball reaches the apex of the throw? (1 point)
gpe and ke
entirely ke
mostly gpe and a little ke
entirely gpe

Explanation:

At the apex of the throw, the baseball's vertical velocity is 0. Kinetic energy (KE) is related to velocity ($KE=\frac{1}{2}mv^{2}$), so with $v = 0$, $KE=0$. Gravitational - potential energy (GPE) is given by $GPE = mgh$, and since the ball is at a non - zero height $h$ above the ground, it has GPE. So at the apex, the ball has entirely GPE.

Answer:

entirely GPE