Question

in physics, what is a change in position called?
a \tmotion
b \tdistance
c \tframe of reference
d \tspeed

Explanation:

In physics, motion is defined as a change in an object's position relative to a reference point. Distance is the total path length, frame of reference is a system for measuring position, and speed is the rate of motion. So the correct term for change in position is motion.

Answer:

a. motion