The springs of a 1000 kg car compress 5.5 mm when its 68 kg driver gets into the driver's seat. if the car goes over a bump, what will be the frequency of vibrations?

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?

Aboy with a mass 25 kg climbs into a small tree. he sits on a branch that is 2.o m above to the ground.what is his gravitational potential energy above the ground?

Where do magnetic lines of force enter earth?