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Speed-time graph

Problem Solving — algebra and arithmetic (GMAT Focus Edition)
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by marmar29 » Wed Feb 16, 2011 1:11 am
in ths lesson i cant get how to calculate the acceleration in math !!
where its only the explanation 3 lines whc says
acceleration = gradient of speed time graph
& then asked me to find acceleration whn t = 4
is there a relation bertween acc. & t ??
pls help
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Source: — Quantitative Reasoning |
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by Tani » Fri Feb 18, 2011 5:08 pm
Acceleration is the change in speed over time - in other words, it is the slope of the curve. However, I don't see any information in the graph you show that would allow you to calculate the slope. Also, I don't understand why there are two lines. HAve you included all the information from the problem?
Tani Wolff
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