What is the potential energy of a bowling ball as it sits on a 40 meter tall building

784 J

Explanation:

The formula for potential energy is PE = mgh, where m is the object's mass, g is the gravitational constant (on earth, it is 9.8 m/s/s) and h is the height from the ground.  Using the given information,

m = 2 kg

g = 9.8 m/s/s

h = 40 meters

Plug in the given information into the formula for potential energy.

PE = (2)(9.8)(40) = 784 J

b. a lightning bug, plug of grass, and a worm