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Maths & Physics Help

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godfather93:
i don't understand either. ???

astarmathsandphysics:
120-40=80 and 50 mins=5/6 0f 60 mins =1 hour

godfather93:
but why are our answers so far apart. I just used a smaller part of the line to calculate the gradient, still, it should be around the same answer!

SGVaibhav:
i know this
:P

u have to find the speed in km/h
while in graph, the time is in minutes
so u ahve to convert it into hours
to convert 50 mins into hours

50/60    =    5/6


speed = dist/time
         =80/(5/6)
         =80 x 6/5
         =480/5
         =96km/h

Ukhti-R:
Im stuck guyz
I cant do Q20a,c i) and ii)
May june 2008 P2
anyone ..?

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