1. When an object is moving with uniform circular motion, the object's tangential sped is
a. circular
b. perpendicular to the plane of the motion
c. constant
d. directed toward the center of the motion

2. When the object is moving with uniform circular motion, the centripetal acceleration of the object
a. circular
b. perpendicular to the plane of the motion
c. constant
d. directed toward the center of the motion

3. The centripetal force on an object in circular motion is
a. same direction as tangential speed
b. direction opposite the tangential speed
c. same direction as the centripetal acceleration
d. direction opposite the centripetal acceleration