1. A coconut is falling from a tree. I which position is the gravitational potential energy the greatest?
Position 1
Position 2
Position 3
The gravitation potential energy is equal the whole time.

2. You have a can of Dr. Pepper soda you want to keep cold and a Jimmy Johns sandwich you want to keep warm. You have wool blankets and aluminum foil. Which statement below will help your temperature goals most?
A: Wool blankets individually wrapped around each.
B: aluminum foil individually wrapped around each.
C: aluminum foil around the sandwich and wool around the soda.
D: aluminum foil around the soda and wool around the sandwich.

3. As a small puddle of water freezes outside your front door...
A: it absorbs energy from it surroundings.
B: it absorbs the cold from its surroundings.
C: it’s surroundings absorb energy from the water.
D: Temperature stays constant.
E: it releases its energy and absorbs cold.

1. Position 1 - gravitational force is maximum at infinity. So the farther apart the two objects are, the more potential energy the falling item has.

2. A: Wool blankets individually wrapped around each. - a wool blanket is an insulator which means it does not readily allow the transfer of heat. The wool blanket stops air flow around the can and sandwich meaning the atoms and molecules in the air have to transfer by conduction.

3. C: It’s surroundings absorb energy from the water. - heat tends to move from areas with high energy to areas of low energy. The ground and air have lower specific heats than water meaning if the ground gets below 0°C, it will start pulling energy from the water until the water freezes.