Question 1088906
{{{ARC[1]=(D[4]-D[0])/(4-0)}}}
{{{ARC[1]=(147.6-0)/(4-0)}}}
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{{{ARC[2]=(D[9]-D[6])/(9-6)}}}
{{{ARC[2]=(287.1-185.4)/(9-6)}}}
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Use a calculator to work those out. The units are in m/s.