5. a student threw two identical balls up into the air. for the balls to have the same
amount of gravitational potential energy at a certain point in time, what must be
true?
a. they must be moving at the same speed,
b. they must be at the same height above the ground,
c. they must have been thrown at the same time,
d. they must have been thrown with the same amount of force.

d. They must have been thrown with the same amount of force.

Explanation: If the balls were thrown with different amounts of force, they would not have the same amounts of gravitational potential energy at a certain point of time.

the major parts of the digestive system:

salivary glands.

pharynx.

esophagus.

stomach.

small intestine.

large intestine.

rectum.

accessory digestive organs: liver, gallbladder, pancreas.

a chair, a bed, and a toothbrush

explanation:

i was told this before by a teacher, so yeah