A particle moves so that and

MATHEMATICS · Single correct · AP · Calculus BC · Parametric, Polar, and Vector-Valued Functions · Parametric, Polar, and Vector-Valued Functions

Problem

A particle moves so that

r=1+t

and

\theta=t

, where

t

is in seconds. What is the magnitude of the acceleration of the particle at

t=1

? (a)

\sqrt{2}

(b)

\sqrt{5}

(c)

2\sqrt{2}

(d)

4