A 3kg mass initially moving 4m/s to the right rebounds off of a wall and begins travelling to the left at 2m/s. Remember to use the right signs when substituting vf and vi. Calculate the change
in momentum.

What are the theoretical properties of a gas at a temperature of 0 kelvin?

Aplane travels 1000 miles in 5 hours .what is the planes average speed?

Automobile fuel efficiency is often measured in miles that the car can be driven per gallon of fuel (mpg). heavier cars tend to have lower fuel efficiencies (lower mpg ratings). which variable (weight or fuel efficiency) is most naturally considered the explanatory (predictor) variable in this context?