A mini car of mass 750kg has a head on collision with a SUV ofmass 1200kg travelling at 40 m/s. Both cars stop dead. How fast was the mini car travelling? (Show working)

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?

What properties of a moving object are used in determining the object's energy of motion

What is the rate of 12 liters of water moving through a water hose in 4.0 minutes?