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AP® Calculus AB-BC

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Maximum Height of a Particle

APCALC-E7SVK8

A particle moves along the $y$-axis according to the position equation $y( t ) =-t ^2 +2t+5$ for any time $t > 0$.

At what time will the particle reach its maximum height?

A

$0$

B

$1$

C

$2$

D

$5$