Siti released a wooden block from the top of a ramp. She repeated the experiment by changing the surface of the ramp. The time taken for the block to reach the bottom is recorded below.<br><br>Which surface most likely represents sandpaper?
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Worked Solution
Step 1: Sandpaper is a rough surface compared to others.
Step 2: A rougher surface creates more frictional force opposing the motion of the block.
Step 3: More friction results in a slower speed, meaning the block takes a LONGER time to reach the bottom.
Step 4: Surface X has the longest time (2.5s).
Correct answer: Surface X: 2.5 seconds
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