Circles and PiRadians Distance

Distance Travelled

You can think of radians as the “distance traveled” along the circumference of a unit circle. This is particularly useful when working with objects that are moving on a circular path.

For example, the International Space Station orbits Earth once every 1.5 hours. This means its speed of rotation is radians per hour.

In a unit circle, the speed of rotation is the same as the actual speed, because the length of the circumference is the same as one full rotation in radians (both are 2π).

The radius of the ISS orbit is 6800 km, which means that the actual speed of the ISS has to be = 28483 km per hour.

${round(p*1.5,1)}h

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Circles and PiRadians Distance

Distance Travelled