SOLUTION: <a href='http://postimage.org/' target='_blank'><img src='http://s9.postimg.org/pk5voh3mn/Untitled.gif' border='0' alt="Untitled" /></a> i'm sorry i still do not get it :(

Question 844040:
i'm sorry i still do not get it :(
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
Velocity is distance divided by time.
At 5 sec, you traveled 50 meters.
m/s
At 10 sec, you have traveled 100 meters and stopped.
So at 15 sec, you are moving at m/s.
At 20 seconds you start moving again, and by 25 sec you have traveled 0-100=-100 meters in 5 sec.
m/s
At 30 secs you start moving in the opposite direction and by 35 sec have travel -50-(-100)=50 meters in 5 sec.
m/sec.
You are basically measuring the slope of the lines.
The slopes for A and D are equal (visually) so the velocities are equal.
The slope in C is much steeper (greater) and in the other direction (negative).
The slope in B is zero. You are not moving.
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