What is the momentum of a 800 kg car traveling at 20 m/s

Sara is creating an experiment. her hypothesis states the following. if i increase the air in my tires, then i will get better gas mileage. if this is her hypothesis what column titles do we need in our date table? a. air pressure in tire (psi) and gas mileage (mph) b. air pressure in the atmosphere (psi) and gas mileage (mph) c. miles (m) and gallons per mile (g) d. old battery and new battery

Arock collection comes from which part of earth?

You've already seen the value of 9.8 in this lesson. what's this value called? what quantity does it represent?