You look for shells when you visit the beach. However, if you're hiking in the mountains and you find shells by accident, you know that
A) the mountain has a lake nearby.
B) the mountain was once under the sea.
C) some prehistoric sea creatures could live on land, too.
D) the shells were blown by powerful winds to the mountain top.

A2-kg bowling ball is 1 meter off the ground on a post when it falls. just before it reaches the ground,its traveling 4.4 m/s. assuming that there is no air resistant, which statement is true a. the initial potential energy is less then the final kinetic energy b. the mechanical energy is not conserved c. the mechanical energy is conserved d. the initial potential energy is greater than the final kinetic energy