Which statement accurately describes the motion of the objects in the ticker tape above?

both objects are speeding up at a constant rate.
one object speeds up before it slows to a stop.
both objects speed up before stopping.
one object speeds up at a constant rate until it stops.

Suppose a wheel with a tire mounted on it is rotating at the constant rate of 2.15 times a second. a tack is stuck in the tire at a distance of 0.373 m from the rotation axis. noting that for every rotation the tack travels one circumference (a) find the tack's tangential speed. (b) what is the tacks radial acceleration?