### Home > CALC > Chapter 11 > Lesson 11.2.1 > Problem 11-47

11-47.

**Multiple Choice:**If (*x*(*t*)*, y*(*t*)) is the position vector of an object at time*t,*then the velocity vector is: Homework Help ✎(a) and (b)

Velocity is the derivative of position.

More than one of the choices is correct.