Question

midpoint rule and integration problem

Answer 1

first of all you have to a table for approximation of velocity at points 0,5,10,15,20,25,30
they are about in order by 0,50,78,94,110,120.

Answer 2

yeah i got that. and then you have to convert it into km/s.
but then i screwed up after that.

Answer 3

velocity : 0,5,15,25
then order =0,40,80,100