1. The problem statement, all variables and given/known data
The following table shows how the velocity of a car varied with time:
Velocity (km/h) 0 19 35 48 48 27 0
Time (s) 0 3 6 9 12 15 18
Assuming these speed values to be joined by straight lines, plot a graph of speed against time and determine the total distance travelled.
2. Relevant equations
s = dxt
Area under graph = distance travelled
3. The attempt at a solution
I assumed this question would be as simple as finding the area under the graph to get the total distance travelled. So I went about drawing my graph along with converting all the values for speeds into (m/s). I have attached a picture of what my graph looks like in case anyone would like to see it (its a bit messy). I’m sure there is a very simple explanation to where I am going wrong but I’m just not seeing it myself.
Thanks in advanced guys!