1. a 0.250 kg baseball sits on the ledge of a window in treadwell hall. if the ball has 18.5
joules of potential energy, how high is the ball?
2. how long would it take to hit the ground?

h = 7.54 m

t = 1.24 s

Explanation:

1.Let g = 9.81 m/s2 is the gravitational acceleration. Since the formula for potential energy is:

where m = 0.25 is the ball mass and h is the height. We can solve for h

2. The time it take for the ball to reach a distance of 7.54m with a gravitational acceleration of 9.81m/s2:

it has to be b, about 97 percent.

im guessing the west of station b