Mini-Quiz: Energy from Gravity for Objects Projected Downward

1. What happens to the potentail energy when an object hits the ground?

   It becomes infinityGood try, but not right. Select another answer. It does not varySorry, not correct. Try another button. It becomes zeroCorrect. You understand gravity and energy.

2. Why does an object have an inital KE when you project it downward?

   It has an initial velocity that causes the KEThat is Correct. You are smart and good looking too. No one is certain why that happensSorry, not correct. Try another button. The initial KE helps to compensate a lack of PEOops! Wrong answer. Re-read the question and try again.

3. What happens at the maximum height when an object is projected upward?

   The KE equals the PEGood try, but not right. Select another answer. The KE becomes zero and the PE relates to that heightCorrect. You understand gravity and energy. The KE and the PE interchange valuesOops! Wrong answer. Re-read the question and try again.

Pick an answer to see instant feedback. Re-read the lesson if you miss one.