Standard Science Primary 6 Interactions

Siti released a wooden block from the top of a ramp. She repeated the experiment by covering the ramp with different materials. Which of the following surfaces would likely result in the SHORTEST distance travelled by the block?

A Waxed paper
B Sandpaper
C Glass
D Smooth plastic
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Worked Solution

Step 1: Identify the force involved (Frictional force).Step 2: Friction opposes motion and is greater on rougher surfaces.Step 3: Sandpaper is the roughest material among the options.Step 4: Higher friction results in more kinetic energy being converted to heat, stopping the block earlier.

Correct answer: Sandpaper

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