Acar travels along a straight line at a constant speed of 60mi/h for a distance d and then another distance d in the same direction at another constant speed. the average velocity for the entire trip is 30.0 mi/h. (a) what is the constant speed with which the car moved during the second distance d?

Asatellite with an orbital period of exactly 24.0 h is always positioned over the same spot on earth. this is known as a geosynchronous orbit. television, communication, and weather satellites use geosynchronous orbits. at what distance would a satellite have to orbit earth in order to have a geosynchronous orbit?