Advanced Science Primary 6 Interactions

Alexa conducted an experiment to test how the surface of a ramp affects the distance a block travels. Based on the comparative setup below, which statement is the most likely conclusion?

A The mass of the block affects the friction more than the surface.
B Surface X is smoother than Surface Y because the block traveled further.
C Surface X is rougher than Surface Y because the block traveled further.
D Friction only acts on Surface Y.
Show Worked Solution

Worked Solution

Step 1: Observe that the block on Surface X traveled a greater distance than on Surface Y. Step 2: Distance traveled is inversely proportional to the amount of frictional force. Step 3: Therefore, Surface X must have exerted less friction, meaning it is smoother than Surface Y.

Correct answer: Surface X is smoother than Surface Y because the block traveled further.

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