Question

Need help with velocity graph

Answer 1

Graph the distance vs. time. Draw a straight line that represents your best guess about what the data represent and calculate the slope of the line [slope = (y2 – y1)/(x2 – x1)] using two points that are not data points. Write the slope on your graph. (Note: Because the ball is always rolling in the same direction, which we consider positive, distance and displacement will be the same thing.)

Answer 2

You should input the data in excel then use the scatter plot function to graph your data.

Answer 3

Finally! Sorry for the late reply. The main problem I am having is finding the slope. I already graphed everything. But it is asking me to find the slope "using two points that are not data points" which I am not sure what that means.

Answer 4

@raffle_snaffle

Answer 5

slope = (y2-y1)/(x2-x1)

Answer 6

velocity = delta_x / delta_t

Answer 7

velocity = (x2 - x1) / (t2 -t1)

Answer 8

What are they asking me to do? Just find the slope?

Answer 9

Do I just make up y1 y2 x1 x2? since they asked to use points that are not data points

Answer 10

can i see your graph?

Answer 11

Ugh sorry I am so late, let me take a pic

Answer 12

@raffle_snaffle here are both of them

Answer 13

H flextex, You don't exactly make up the points as in pulling from air. Think about using a straight-edge and trying to line it up as closely as possible to your data points, that line is the best fit to your data. Then use two points on that line to figure your slope.

Answer 14

@ctheobald could you walk me through it? Just make sure I have the right answer?