5. a sled with no initial velocity accelerates at a rate of 5.0 m/s2 down a hill. how
fast will it be going at the bottom if it takes 12 seconds to reach the bottom of the
hill?

Amoving electron has kinetic energy k1. after a net amount of work w has been done on it, the electron is moving one-quarter as fast in the opposite direction. (a) find w in terms of k1. (b) does your answer depend on the final direction of the electron's motion?

How many atoms of nitrogen are in the chemical formula ni(w on

What is the single most important equation in all of physics?