Question

How can i find the averagee veloity and speed for a postion time graph

Answer 1

velocity is the derivative of the position function or the slope of the line....So
Choose two points on the graph. Subtract the "x-coordinates" (change in position), subtract the "t-coordinates" (change in time) and divide the first by the second,
v/t
is the slope of the line and the average velocity

Answer 2

i thought slope is the change in y over the change in x

Answer 3

yes you are correct.... I wrote the formula wrong
x/t instead of v/t
where x(position) is the dependent variable(y) and t is the independent variable(x)
sorry I know its confusing!! some people use s variable to represent the position
so:
delta s/delta t
where s(position) is the dependent variable(y-axis) and t is the independent variable(x-axis)
*where delta means change in s/change in t

Does that make more sense?

Answer 4

thank you verymuch

Answer 5

so would the average speed and velocity be the same thing

Answer 6

Your Welcome =D
Speed is the absolute value of velocity.
Velocity can be negative where as speed cannot. That is the only major difference but other than that they are the same!

Answer 7

This is all wrong.

Average Velocity is NOT the derivative.

Average Velocity defined= (positionfinal-positioninitial)/time