You throw a baseball straight up in the air, it moves vertically upwards, becomes stationary and then falls back to your hand at the same height as it left it. Which of the following statements are true:

Explanation:

When the baseball is launched vertically upward, the acceleration due to gravity acting on the body is negative until it reach its maximum height. At the maximum height before drop, the baseball will be momentarily at rest (stationary) and at that point where it is at rest, the final velocity of the object is zero and also possess potential energy at that point(energy of a body due to virtue of its position).

During drop, the baseball acts under the influence of gravity and the acceleration due to gravity is positive during its free fall. The baseball was able to fall back freely due to effect of gravitational force acting on it, if not the baseball will keep going upward into the thin air.

u=13

v=30

s/t=u+1\2at

=13+431/2

=13+265.5

=278.5

pe = weightxheight = 2000x1000=2,000,000joules