Siti released a wooden block from the top of an inclined plane. She measured the time taken for the block to reach the bottom. She repeated the experiment by covering the ramp with different materials. Which variable should be kept the same to ensure a fair test?
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Worked Solution
Step 1: Identify the aim (testing how different ramp materials affect time).
Step 2: Identify the changed variable (ramp surface).
Step 3: Identify constant variables. The angle of the ramp must be kept the same as it affects the gravitational pull component and speed.
Step 4: Final Answer: The angle of the ramp.
Correct answer: The angle of the ramp
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