An object is launched from the ground. The object’s height, in feet, can be described by the quadratic function h(t) = 80t – 16t

Question

3 years ago

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An object is launched from the ground. The object’s height, in feet, can be described by the quadratic function h(t) = 80t – 16t

2, where t is the time, in seconds, since the object was launched. When will the object hit the ground after it is launched? Explain how you found your answer.

Mathematics

2 answers:

Nady [450] · Answer 1 · 2022-03-09T13:57:24+03:00

Sample Response: The object will hit the ground after 5 seconds. You can rewrite the quadratic function as a quadratic equation set equal to zero to find the zeros of the function 0 = –16t2 + 80t + 0. You can factor or use the quadratic formula to get t = 0 and t = 5. Therefore, it is on the ground at t = 0 (time of launch) and then hits the ground at t = 5 seconds

What did you include in your response? Check all that apply.

I Rewrite the quadratic function as a quadratic equation set equal to zero: 0 = –16t2 + 80t + 0.

Use the quadratic formula to solve for the zeros.

Factor to solve for the zeros.

t = 0 and t = 5 seconds.

The object will hit the ground after 5 seconds.

irina [24] · Answer 2 · 2022-03-09T14:59:23+03:00

Answer: