Question

The following graph models the height of a model rocket, in feet, measured over time, in seconds.

How many seconds does it take for the rocket to reach the ground after takeoff?
Enter your answer as a number, like this: 42
Do not round your answer if it is a decimal.

Answer 1

Observe the end points on x axis of the parabola

They are

• (0,3)
• (5.04,0)

Time is x axis

So total time

• 5.04-0
• 5.04s

Answer 2

5.04 seconds

Explanation:

• The time taken for the rocket to reach the ground can be found on the graph by finding the x-intercept, at which the height (y-value) will be 0

According to the graph :

• The x-intercept is (5.04, 0)
• Hence, it takes the rocket 5.04 seconds to reach the ground after takeoff