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# Finding Maximum Velocity

SVCALC-WPYNQR

A particle moves along the x-axis so that at any time $t\ge 0$, its position in feet,​ is given by:

$$s(t)=2\cos { (t) } +1$$

What is the particle's maximum velocity (ft/sec) on the interval $0\le t\le 2\pi$?

A

0 ft/sec

B

4 ft/sec

C

1 ft/sec

D

2 ft/sec