You and your friend stand on the edge of a cliff. Your friend throws a rock...
You and your friend stand on the edge of a cliff. Your friend throws a rock upward. At the exact same instant, you drop a rock over the edge. Which of the following statements is true? (Please ignore any air resistance since it is negligible.)
a. The two rocks hit the ground at the bottom of the cliff at the same time.
b. The rock thrown upward will hit the ground before the dropped rock.
c. The total distance traveled by each rock is the same.
d. The two rocks have the same acceleration just before they hit the ground.
Homework Answers
Both the rocks undergo free fall and the only acceleration which acts on them is acceleration due to gravity which acts right from the beginning of motion until they touch the ground.
So the correct answer is: (d) The two rocks have the same acceleration just before they hit the ground.
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