Super speed

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Super speed

Some superheros can move faster than the wind. The men in Apollo 10 reached

a record-breaking speed of around 25,000 miles per hour

when the shuttle re-entered the Earth's atmosphere in 1969.

Wouldn't we save a lot of time to be able to move that fast?

But what's the catch? Air is not empty.

Elements like oxygen and nitrogen, even countless dust particles,

make up the air around us. When we move past these things in the air,

we're rubbing against them and creating a lot of friction,

which results in heat. Just like rubbing your hands together warms them up

or rubbing two sticks together makes fire, the faster objects rub together,

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