348,892 views
40 votes
40 votes
Jason launched a rocket for a physics experiment. This equation can be used to find

the height (h), in feet, of the rocket after t seconds.
h = -16t2 + 288t + 8
How many seconds will it take for the rocket to reach a height of 1,304 feet?

User Firelyu
by
2.6k points

2 Answers

14 votes
14 votes

Final answer:

To find the time it takes for the rocket to reach a height of 1,304 feet, solve the quadratic equation -16t^2 + 288t - 1296 = 0. Use the quadratic formula to calculate the two possible solutions for t and select the positive solution.

Step-by-step explanation:

To find the time it takes for the rocket to reach a height of 1,304 feet, we need to solve the equation h = -16t^2 + 288t + 8, where h is the height and t is the time in seconds.

Set h to 1,304 and solve for t: 1304 = -16t^2 + 288t + 8. Rearrange the equation to form a quadratic equation: -16t^2 + 288t - 1296 = 0.

Use the quadratic formula to solve for t: t = (-b ± √(b^2 - 4ac)) / (2a). In this case, a = -16, b = 288, and c = -1296. Substitute these values into the formula and calculate the two possible solutions for t. The positive solution is the time it takes for the rocket to reach a height of 1,304 feet.

User Philosopher
by
2.8k points
21 votes
21 votes

Answer:

5.063 seconds

Step-by-step explanation:

Use a graphing calculator to graph, then use the table functions to solve for 1304

or say

1304= rest of equations and solve for X

User Los Frijoles
by
2.8k points
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