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A point (red) on a rotating wheel is shown in the animation (position given in meters and time given in seconds). Restart.

1. What is the period of the wheel (the time it takes the red point to complete one revolution)?
2. What is the speed of the red point?
3. What is the magnitude of the acceleration of the red point?
4. At t = 5.0 s, what is the direction of the velocity vector and what is the direction of the acceleration vector for the red point?

Problem authored by Aaron Titus with support by the National Science Foundation under Grant No. DUE-9952323 and placed in the public domain.