Solve the Problem $\mathrm { t }$ Seconds Is $\mathrm { h } = - 13 \mathrm { t } ^ { 2 } + 364 \mathrm { t }$

question 300

Multiple Choice

Solve the problem.
-A projectile is thrown upward so that its distance above the ground after $\mathrm { t }$ seconds is $\mathrm { h } = - 13 \mathrm { t } ^ { 2 } + 364 \mathrm { t }$ . After how many seconds does it reach its maximum height?

• A) \(14 \mathrm {~s}\)
• B) \(28 \mathrm {~s}\)
• C) \(21 \mathrm {~s}\)
• D) \(7 \mathrm {~s}\)

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