AP Physics 1· difficulty 2/5
Two identical blocks start from rest at the same height above the ground. Block A slides down a frictionless incline; block B is dropped vertically. Which arrives at the ground with greater speed?
Block B
Block A
Same speed
Depends on incline angle
Explanation
Same drop height means same change in PE → same KE → same speed. Incline doesn't change the height-to-speed conversion (only the time it takes).
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