(Solved): Earth has a radius of 6300km. It makes a rotation every 24 hours. (a) What is the angular speed ...

Earth has a radius of $6300\mathrm{km}$. It makes a rotation every 24 hours. (a) What is the angular speed $?$ of Earth in $\mathrm{rad}/\mathrm{s}$ ? (b) What is the speed of a point on the equator of Earth as it makes this rotation? Remember that $?$ always has units of radians/s. Sometimes this is written rad/s. I will use rad/s from now on.