A tire is rolling along a road,without slipping,with a velocity v.A piece of tape is attached to the tire.When the tape is opposite the road (at the top of the tire),its velocity with respect to the road is
A) 2v.
B) v.
C) 1.5v.
D) zero.
E) The velocity depends on the radius of the tire.

Question

Quizplus · Accepted Answer

The velocity of the tape when it is at the top of the tire is 2v because the tire is rolling without slipping. The center of the tire moves with velocity v, and since the tire is rotating, the top point moves with an additional velocity v relative to the center, resulting in a total velocity of 2v relative to the road.

A Tire Is Rolling Along a Road,without Slipping,with a Velocity