Question

question 15 of 25 which of the following is true about a planet orbiting a star in uniform circular motion? a. the acceleration vector of the planet points directly away from the star. b. the velocity of the planet is constant. c. the direction of the velocity vector is always changing. d. the speed of the planet is always changing.

Explanation:

In uniform circular motion, speed is constant but velocity (a vector with magnitude and direction) changes as the direction of motion is always changing. The centripetal acceleration vector points towards the center of the circle (towards the star in this case).

Answer:

C. The direction of the velocity vector is always changing.