If a Stone Is Dropped from a Height of 472 $S = - 73 - 12 t ^ { 2 }$

question 112

Multiple Choice

If a stone is dropped from a height of 472 feet, its height after t seconds is given by $S = - 73 - 12 t ^ { 2 }$ . Find the stone's average velocity over the period $[ 2,4 ]$ .

• A)-73
• B) -69
• C) -72
• D) -70
• E) -74

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