Acar accelerates from 4 meters/second to 16 meters/second in 4 seconds. the car’s acceleration is meters/second2.

You are traveling in a car going at a constant speed of 100km/h down a long, straight highway. you pass another car going in the same direction which is traveling at a constant speed of 80km/h. as measured from your car's reference frame this other car is traveling at −20km/h. what is the acceleration of your car as measured from the other car's reference frame? what is the acceleration of the other car as measured from your car's reference frame?

If gases like carbon dioxide and methane make up less than 1% of the total atmosphere, why is it important for scientists to monitor changes in percentages of these gases?

If the chemical properties of a substance remain unchanged and appearance or shape of a substance changes it is called a ?