3. A 250 kilogram cannon launches a 30 kilogram cannon ball at a velocity of 20 m/s. What is the recoil velocity of the cannon? Show all work, including the equation and
substitution with units

Which term best describes the phrase “something that happens”?

Which safety measures should you follow during a thunderstorm? check all that apply. (a) avoid touching anything that conducts electricity. (b) avoid touching a person who has been struck by lightning. (c) go outside. (d) keep your computer turned off. (e) stay out of water. (f) stay inside.

It is really hard for me right know