HOTS Science Primary 6 Interactions

Tim designed a toy car that uses magnets to float slightly above a track. When he pushes the car, it travels much further than a normal toy car. Why?

A The floating design eliminates the friction between the wheels and the track.
B The magnets increase the gravitational pull on the car.
C The magnets provide a constant push force to the car.
D Magnetic force is stronger than air resistance.
Show Worked Solution

Worked Solution

Step 1: Normal cars have friction between wheels and track. Step [2-9]: By floating, the surfaces are no longer in contact. Step [2-9]: Without contact, surface friction is eliminated, allowing the car to glide further.

Correct answer: The floating design eliminates the friction between the wheels and the track.

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