Remote Control Interval
Posted on Wednesday, May 18, 2011 in Photography
Basic physics help? Velocity time graph and displacement?
Hi. Theres a drawing of a graph which is a record of the motion of a remote controlled car during an 80 sec time interval. It goes like this. On the Y axis, 0 is in the middle and from the bottom up it goes -1.0, -0.75, -0.50, -0.25, 0, 0.25, 0.50, 0.75, 1.0. (Y axis is velocity, m/s) ( x axis is time, secs) X axis starts at 0 and goes 10, 20, 30, 40, 50, 60, 70, 80. Now the line starts at 0 and it goes up to 1.0 m/s in 10 secs.
The it stays at 1.0 for 10 secs, then goes down to -1.0 in 20 secs. Then Says at -1 for ten secs (up to 50 now) then it goes up to 1.0 in 10 secs then it stays at 1.0 for 10 secs then goes back down to 0 in ten secs. Sorry to have to make you work. Anyway heres the question. What is the total displacement of the car during the 80 s interval and what is the average velocity of the car during the entire interval. How do I find both of these.
The total displacement would be the area under the graph and the average velocity would be the total displacement divided by the total time taken i.e. 80 sec
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