A rock is dropped from a bridge 320 feet above a river. The pathway that the rock takes can be modeled by the equation h=-16t squared+320. How long will it take the rock to reach the river?
A. 2.5 sec
B. 3.5 sec
C. 3.8 sec
D. 4.5 sec

Question

01-03-2022
Mathematics

Answered

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A rock is dropped from a bridge 320 feet above a river. The pathway that the rock takes can be modeled by the equation h=-16t squared+320. How long will it take the rock to reach the river?
A. 2.5 sec
B. 3.5 sec
C. 3.8 sec
D. 4.5 sec

Sagot :

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