Question

multiple choice question
two test cars, each moving at 50 mph, are made to collide head - on. before the collision, these two cars have ________ velocities.
○ similar
○ different
○ unknown
○ equal

Explanation:

Velocity is a vector quantity with both magnitude and direction. Since the cars are moving head - on, their directions are opposite while the magnitudes are the same (both 50 mph). So their velocities are different.

Answer:

B. different