OpenStax, Precalculus 2e §12.4 Derivatives · Try It 8 · Algebra · Expressions

Derivatives · Try It 8

A fireworks rocket is shot upward out of a pit 12 ft below the ground at a velocity of 60 ft/sec. Its height in feet after $t$ seconds is given by $s = - 16 t^{2} + 60 t - 12.$ What is its instantaneous velocity after 4 seconds?

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OpenStax, Precalculus 2e · §12.4 Derivatives · Try It 8

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