Standard Science Primary 6 Interactions

Ravi released a toy car from the top of the ramp shown below. He wanted to increase the distance the car travels along the floor. What should he do?

A Decrease the height of the ramp.
B Use a rougher surface for the ramp.
C Use a heavier toy car.
D Apply oil to the floor surface.
Show Worked Solution

Worked Solution

Step 1: To travel further, the car needs to face less opposition (friction). Step [2-9]: Oil acts as a lubricant to reduce friction between the car wheels and the floor. Step [2-9]: Lower friction results in a greater distance travelled.

Correct answer: Apply oil to the floor surface.

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