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anonymous
 one year ago
You drive a car 2.0 km to the gas station, 4.0 km to the shopping mall to let your mother off, and 4.5 km back home. The trip takes 20.0 min. What is your average speed?
3.2 m/s
4.38 m/s
8.75 m/s
0.525 m/s
anonymous
 one year ago
You drive a car 2.0 km to the gas station, 4.0 km to the shopping mall to let your mother off, and 4.5 km back home. The trip takes 20.0 min. What is your average speed? 3.2 m/s 4.38 m/s 8.75 m/s 0.525 m/s

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sophiaholder
 one year ago
Best ResponseYou've already chosen the best response.0OKay so, S = distance/time

sophiaholder
 one year ago
Best ResponseYou've already chosen the best response.0So, you would want to add up how many kilometers you traveled first.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0that would be 10.5/20.00 right?

sophiaholder
 one year ago
Best ResponseYou've already chosen the best response.0Nope. If we are trying to find miles/seconds we need to convert them

DanJS
 one year ago
Best ResponseYou've already chosen the best response.0Do you remember calculating the 'average rate of change' given two points on a graph from algebra

DanJS
 one year ago
Best ResponseYou've already chosen the best response.0slope of a secant line connecting the two points on the graph...

sophiaholder
 one year ago
Best ResponseYou've already chosen the best response.0Dan can probably explain this better than me, so I leave this one to him

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I have no Idea what your talking about my brain just died

DanJS
 one year ago
Best ResponseYou've already chosen the best response.0It is the same as that, except it is a graph of (Total distance traveled) vs (total time traveled) for the y and x axis

DanJS
 one year ago
Best ResponseYou've already chosen the best response.0To get the average speed  you take the initial value point (0 min, 0 km) and the final point (20 min , (4.5+2.0+4.0) km ) and calculate the slope of the line through those

DanJS
 one year ago
Best ResponseYou've already chosen the best response.0In short, the average speed on an interval will be the ratio of the total distance traveled over the total time traveled

DanJS
 one year ago
Best ResponseYou've already chosen the best response.0\[ave~speed = \frac{ distance ~traveled }{ time of traveling }\]

DanJS
 one year ago
Best ResponseYou've already chosen the best response.0you will get km/min need to convert to m/s

dan815
 one year ago
Best ResponseYou've already chosen the best response.0convert it into meters/second

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I DON'T UNDERSTAND xx

DanJS
 one year ago
Best ResponseYou've already chosen the best response.0\[\frac{ X~km }{ 1~\min }*\frac{ 10^3~m }{ 1~km }*\frac{ 1~\min }{ 60~s } = \frac{ X * 10^3 }{ 60 }*\frac{ m }{ s }\]

dan815
 one year ago
Best ResponseYou've already chosen the best response.0okay do you get that speed = d/t

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0distance divided by time?

dan815
 one year ago
Best ResponseYou've already chosen the best response.0yes speed tells you the rate of distance change over time

dan815
 one year ago
Best ResponseYou've already chosen the best response.0you saw that 10.5 km traveled in 20 mins right

dan815
 one year ago
Best ResponseYou've already chosen the best response.0tell me if that part is clear or not, gotta know this to move on
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