Ihave a table that i recorded of my data and my partner's data my table my partner's table position (m) time (s) position (m) time (s) 0m 0 0m 0 2m 2.30 2m 2.74 4m 4.28 4m 2.39 6m 5.00 6m 2.20 8m 5.89 8m 1.80 10m 6.59 10m 3.21 a. explain how you can use your graph to figure out who had the fast average speed. b. explain how you can use your data table to figure out who had the faster average speed c. look at each person's line on the graph. how can you use the graph to tell whether you moved at a constant speed? did you move at a constant speed? did your partner? d. calculate each person's average speed in meters per second and in centimeters per second.

My table                                  My partner's table

position (m)     Time (s)           position (m)     time (s)

0m                    0                      0m                   0
2m                    2.30                 2m                   2.74
4m                    4.28                 4m                   2.39
6m                    5.00                 6m                   2.20
8m                    5.89                 8m                   1.80
10m                  6.59                 10m                  3.21

a. Explain how you can use your graph to figure out who had the fast average speed.

Compare the slopes of the lines from the origin to the last point.

You will verify that this slope for the second graph is steeper, so the average speed of the second partner is faster.

b. Explain how you can use your data table to figure out who had the faster average speed

Compare the final times for the two people. Given that the final distances are equal, that who has the lesser time is the person with faster average speed.

c. Look at each person's line on the graph. How can you use the graph to tell whether you moved at a constant speed? Did you move at a constant speed? Did your partner?

Constant speed implies constant slope, which is a straight line. So, none ot the persons moved at constant speed.

d. Calculate each person's average speed in meters per second and in centimeters per second.

1) You:

Average speed = displacement / time = 10m / 6.59 s = 1.52 m/s = 152 cm/s

2) Partner:

Average speed = displacement / time = 10m / 3.21s = 3.12 m/s = 312 cm/s

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