A 1220 kg mass car traveling at a velocity of 22 m/s crashes into a 1475 kg parked car. After the crash, the parked car moves with a velocity 10 m/s. Calculate the first car's velocity after the crash.

Gam radio signals can usually be heard behind a hill, but fm often cannot. that is, am signals bend more than fm. explain. (radio signals, as we shall see, are carried by electromagnetic waves whose wavelength for am is typically 200 to 600 m and for fm about 3 m.)

This is the substance(s) formed in a chemical reaction.

In an experiment, how can i change human errors? be specific.