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velocity time graph watch

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    can anyone help me draw this graph..im stuck!

    A car is being driven along a straight road at a steady 54km/h. It passes a motorcyclist at the side of the road. 5 s later the motorcyclist starts upand accelerates uniformly at 2ms-2 to a speed of 72km/h. He than continues at this speed until he catches up with the motorist. Draw a sketch of the velocity time graph for this motion.

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    First off you need to change the 2ms-2 into km/h. The cars velocity will be a straight horizontal line. The motorcyclists will be 0ms-1 until 5s then it will be a slope with a positive gradient equivalent to 2ms-2 until it reaches 72kmh-1. The area under the graph is the displacement.
    Hope this helps
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    http://www.stvincent.ac.uk/Resources...motgraphs.html
    These show how the different parts of your graph should look and remember to label.
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    http://www.stvincent.ac.uk/Resources...motgraphs.html
    These show how the different parts of your graph should look and remember to label.
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    (Original post by lincs_b)
    First off you need to change the 2ms-2 into km/h. The cars velocity will be a straight horizontal line. The motorcyclists will be 0ms-1 until 5s then it will be a slope with a positive gradient equivalent to 2ms-2 until it reaches 72kmh-1. The area under the graph is the displacement.
    Hope this helps

    how do i change 2ms-2 into km/h??
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    1 km = 1000m
    1 h = 3600s
 
 
 
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