If you watch a train go by at 20 m/s, at what speed will the people sitting on the train be moving relative to you? Would someone walking toward the back of the train have a greater or lesser speed relative to you? Explain.

If an athlete runs once around a track, back to the starting line, her average velocity is zero. true or false?

While standing outdoors one evening, you are exposed to the following four types of electromagnetic radiation: yellow light from a sodium street lamp, radio waves from an am radio station, radio waves from an fm radio station, and microwaves from an antenna of a communications system. rank these type of waves in terms of increasing photon energy.

Why is no-till farming more sustainable than many traditional methods of farming