meter per liter seconds per gram milligrams per liter centimeters per second
I gave my students this multiple choice question: A student is measuring the speed at which a ball rolls down a ramp. Which unit of measurement is the student most likely using to describe the speed of the ball?

Only one answer is correct among these 4 choices:
- meter per liter
- seconds per gram
- milligrams per liter
- centimeters per second

Could you tell me which one is correct?

centimeters per second