Mini-Quiz: Horizontal Motion Unaffected by Gravity

1. What happens when an object is projected perpendicular to gravity?

   It continually moves parallel to the groundGood try, but not right. Select another answer. Its horizontal velocity remains the same, but it falls according to gravityCorrect. You understand gravity concepts. It slows downSorry, not correct. Try another button.

2. Is the horizontal velocity constant when an object is projected at a downward angle?

   Yes, the horizontal component of the velocity remains constantThat is Correct. You are also good looking. It depends on the angleOops! Wrong answer. Re-read the question and try again. No, the horizontal velocity acceleratesSorry, not correct. Try another button.

3. If the Earth is a sphere, how can it be considered flat?

   Many people still believe the Earth is flatGood try, but not right. Select another answer. The Earth is not an exact sphere but is flat on one sideOops! Wrong answer. Re-read the question and try again. Since the Earth is so large, its surface is approximately flat for short displacementsCorrect. You understand gravity concepts.

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