Correct answer only !

a roller coaster car is traveling down a track at 22 m/s. the car has a mass of 2000 kg. what is the kinetic energy of the car?

Blu !  The formula is right THERE, IN the question.  All you have to do is plug numbers into it.

The formula:  Kinetic Energy = 1/2 m v²

' m ' is 2,000 kg

' v ' is 22 m/s

Now pluggum in:

KE = (1/2) (2,000 kg) (22 m/s)²

KE = (1/2) (2,000 kg) (22 m/s x 22 m/s)

KE = (1/2) (2,000 kg) (484 m²/s²)

I'm sure you can finish it off from this point, and pick the correct choice.

increasing transnational kinetic energy. because the transnational kinetic energy formula consists of only two variables, mass and velocity, increasing one of those properties is the only way to increase an object's transnational kinetic energy. increases to mass and velocity, however, do not have the same impact.

small = small current large mag large current