Your friend competes in a high jump competition at a track meet. the function h=-16t+18t models height h (in feet) of your friend after t seconds. after how many seconds is your friend at a height of 4 feet? after how many seconds does your friend land on the ground?

Question

Mathematics

Adrienne

23 September, 15:28

Your friend competes in a high jump competition at a track meet. the function h=-16t+18t models height h (in feet) of your friend after t seconds. after how many seconds is your friend at a height of 4 feet? after how many seconds does your friend land on the ground?

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Answers (1)

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Jocelyn Calderon · Answer 1

The function that models the height is given by:

h=-16t+18t

thus the value of t when h=4ft will be:

4=-16t+18t

4=2t

h=4/2

t=2 seconds

Answer: 2 seconds