An object is launched straight up from the ground with an initial velocity of 80 feet per second. The height is found using the

Question

An object is launched straight up from the ground with an initial velocity of 80 feet per second. The height is found using the equation below. At how many seconds will the height be at 64 feet? h = - 16t² + 80t 
1 second and 4 seconds 
2 seconds 
3 seconds and 6 seconds 
 5 seconds

Kunduz · Accepted Answer

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