Kinetic energy increases. Potential energy decreases. (You can pick multiple answers)
A. A baseball pitcher throws a fastball to a batter,
B. A book is placed on a shelf.
C. A skier descends from a mountain top.
D. A rubber band is stretched around a ponytail,
E. Water molecules are headed until they become a vapor,
F. A rechargeable battery recharges.

A. A baseball pitcher throws a fastball to a batter,

C. A skier descends from a mountain top.

E. Water molecules are headed until they become a vapor,

Explanation:

Kinetic energy is the energy associated with motion and potential energy is energy associated with position in a system.

In the examples cited, the kinetic energy increases since the object is in motion, so its potential energy decreases.

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just did the assignment and the answer was #1 +2 n