"As a car passes point A on a straight road, it's speed is 10m/s, the car moves with constant acceleration, a m/s/s, along the road for T seconds until it reaches point B, where it's speed is Vm/s.(adsbygoogle = window.adsbygoogle || []).push({});

The car travels at this speed for a further 10 seconds, when it reaches the point C. From C it travels for a further T seconds with constant acceleration 3a m/s/s until it reaches a speed of 20 m/s at the point D."

Sketch the [t,v] graph for the motion, and show that V=12.5

ok, this is the first t,v graph i've drawn, so it could be painfully wrong, which may be my first problem, here it is is paint.

anyway, i don't know whether my graph is correcy, and even if it is, i just can't seem to work it out.

tried some trig, trapezium rule, i just feel i have to many unknowns to work this thing out

any push in the right direction is appreciated

alternate link to my graph thingy

http://pics.bbzzdd.com/users/acidvoodoo/physics.JPG [Broken]

drag and drop into your browser, or copy and paste, to get it to work :)

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# Homework Help: Velocity Time graph question [i'm not getting anywhere]

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