Gerard is riding his bicycle directly east. His maximum instantaneous velocity was 8 meters per second and his minimum instantaneous velocity was 0 meters per second. He covered 7.20 kilometers in 20.0 minutes. What is his average velocity for the ride? 8 m/s
6 m/s
4 m/s
0 m/s

Mutt and jeff are running along a path each pushing a cart loaded with rocks. if mutt's wagon has a mass two times greater than jeff's and they want to stay together, arriving at their destination at the same time, what must happen? a) jeff should slow down so mutt can catch up. b) mutt must use half as much force to push his cart. c) mutt must use twice as much force to push his cart. d) mutt and jeff will use the same force, but mutt will take bigger steps.

At very high pressures, gases become and will eventually a) more dense; become hotter b) more dense; change to a liquid or solid c) less dense; combust d) less dense; turn into a liquid

An object's buoyant force and weight mean the same thing.a. trueb. false