If the starting velocity was 0 m/s and the final velocity was -7.68 m/s, what is the average velocity of the rock?

Asample of a gaseous substance changes into a liquid

Which force is most responsible for binding together an atom's protons and neutrons? electrostatic gravitational nuclear magnetic

After a big snowfall, you take your favorite rocket-powered sled out to a wide field. the field is 195 m across, and you know that your sled accelerates at a rate of 3.65 m/s2 when the rocket is on. how much time will it take the sled to cross the field starting from rest, assuming the rocket is on the whole time?