I have a question regarding kinetic energy in physics

Question

Which object has more kinetic energy; an 800 kg car moving at a velocity of +20 m/s, or an 800 kg car moving at a velocity of -20m/s?

A. The car going +20 m/s has more kinetic energy

B. The car going -20 m/s has more kinetic energy

C. The two books have the same amount of kinetic energy

D. We can't tell which one has more kinetic energy without knowing the force on the cars.

Answer 1

K = kinetic energy

K = mv² / 2

Since m is the same for both and v² is the same for both, K is also the same for both.

When you see a question like this, reference the formula, and the answer will be clear.