Slanting Surfaces Without Friction: Two objects have masses m and 5m, respectively. They both are placed side by side on a frictionless inclined ramp and allowed to slide down from rest without any air resistance. Which one of the following statements about these objects is correct?
A. It takes the lighter object 5 times longer to reach the bottom of the ramp than the heavier.
B. It takes the lighter object 10 times longer to reach the bottom of the ramp than the heavier.
C. It takes the heavier object 5 times longer to reach the bottom of the ramp than the lighter.
D. It takes the heavier object 10 times longer to reach the bottom of the ramp than the lighter.
E. The two objects reach the bottom of the ramp at exactly the same time.
Answer: E
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