A 0.750kg ball is dropped on to a spring. If the ball is traveling at 5.00m/s, how much does the spring compress bringing the ball to a stop? The spring constant is 650.N/m

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?

The experiment was repeated many years later but the gases were mixed in a different type of container. a white solid was obtained which was xenon fluoride. predict whether you think 1) krypton and 2) radon will react with fluorine. explain reasons for your predictions

Compare the horizontal displacement of the two balls as they travel to the ground. what do you observe?