The correct answer is:
C It has almost no friction.
Magnetism isn’t just for sticking things together; it can also be used to keep things apart. A maglev train, for example, is a high-speed train that uses the principle of magnetic repulsion. Magnets in the train tracks repel the magnets attached to the train. As a result, the train is suspended above the tracks. It runs with almost no friction to slow it down, which means it can reach super-high speeds. A maglev train once clocked in at 343 miles per hour!
Why does a maglev train go so fast?
A
It has a large amount of friction.
B
It uses only north-pole magnets.
C
It has almost no friction.
D
It uses only south-pole magnets.
1 answer
1 answer