Using a graph to determine displacement and distance, I got 7, 8, -1, 0, 5, 2, and 0. A person is walking briskly in a straight line, which we shall call the x axis

Question

)What is the person’s displacement between t= 2.0 s and t= 11.0 s ? Express your answer in meters to two significant figures. What is the person’s displacement between t= 3.0 s and t= 11.0 s ? Express your answer in meters to two significant figures. What is the person’s displacement between t= 2.0 s and t= 3.0 s ? Express your answer in meters to two significant figures.What is the person’s displacement between t= 8.0 s and t= 10.0 s ? Express your answer in meters to two significant figures. What distance did the person move from t= 0 s to t= 6.0 s ? Express your answer in meters to two significant figures.What distance did the person move from t= 2.0 s to t= 4.0 s ? Express your answer in meters to two significant figures. What distance did the person move from t= 9.0 s to t= 11.0 s ? Express your answer in meters to two significant figures. at 2 seconds the position is 0 meters, at 3 seconds the position is -1m, at 4 seconds the position is -2 m, at 6 seconds the position is 1 m, at 8 seconds the position is 7 m, at 9 seconds the position is 7 m, at 10 seconds it is 7m, and 11 seconds position is 7 m

Answer 1

Hello Sheridan K.,

If I am interpreting your question correctly, then I would have formatted the question as such:

A person is walking briskly in a straight line (at constant velocity), which we shall call the x-axis.

At 2 seconds the position is 0 meters.

At 3 seconds the position is -1m.

At 4 seconds the position is -2 m.

At 6 seconds the position is 1 m.

At 8 seconds the position is 7 m.

At 9 seconds the position is 7 m.

At 10 seconds it is 7m.

At 11 seconds position is 7 m.

1) What is the person’s change in displacement between t= 2.0s and t= 11.0s?

This person's change in displacement is 7.0m. The total distance walked is much larger.

2) What is the person’s displacement between t= 3.0s and t= 11.0s?

8.0m

3) What is the person’s change in displacement between t= 2.0s and t= 3.0s?

This person's change in displacement is -1.0m.

4) What is the person’s displacement between t= 8.0s and t= 10.0s?

This person's change in displacement is 0.0m.

5) What distance did the person move from t= 0s to t= 6.0s?

From t=2s to t=3s, they walked 1m. From 3s to 4s, they walked 1m. From 4s to 6s, they walked 3m. So in total they walked 5.0m.

6) What distance did the person move from t= 2.0s to t= 4.0s?

2.0m

7) What distance did the person move from t= 9.0s to t= 11.0s?

0.0m

So your answers appear to be correct.