Question

This image will be used for Part D. Question: Use the constraints of the real-world situation to predict the height of the baseball at 20 seconds. Select all that apply.

Options:
1. The height of the ball would be zero at 20 seconds.
2. The ball will be on the ground and 20 seconds.
3. The ball would bounce and go back to a height of 50 feet.
4. g(x) = 0.
5. there is not enough information to answer this question.

Tell me all the options like this: Option 1,2,4.

Answer 1

Explanation:

the correct answer IS options 1, 2, 4.

the curve shows us that the ball hits the ground (height 0) at 12 seconds and then stays there.

so, at 20 seconds the height is 0, as the ball is on the ground, and so the functional result g(x) = 0.

actually that is g(20) = 0.

as g(x) gives us the height of the ball x seconds after throwing it out of the window.

although I have to say : the graph does not show us the situation at 20 seconds (it ends at 16 seconds). maybe somebody picks it up (so, it would move up again). we don't know.

so, there is some point for option 5.

but normally, we can say 1, 2, 4 are correct.

option 3 is definitely out, because the ball would not suddenly, after 8 seconds (from 12 to 20 seconds) flat on the ground, start bouncing again.