Connecting a series of cells together creates what?

When an object moves in uniform circular motion, the direction of its acceleration is a) in the same direction as its velocity vector. b) in the opposite direction of its velocity vector c) is directed toward the center of its circular path. d) is directed away from the center of its circular path. e) depends on the speed of the object.

Awalk up the phase change graph worksheet

What is the measurement of how fast an object moves relative to a reference point?