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+0  
 
+1
131
1
avatar+429 

Thank you!

smileysmileysmiley

 Feb 21, 2019
 #1
avatar+18495 
+1

(vf - vi)/time = Average acceleration       Vf = velocity final   Vi = velocity initial

(30-0)/40sec  = 3/4 m/s^2

 

b estimate would be the point on the graph which is closest to parallel to the line drawn from 0,0   to 40, 30

       my estimate is 10 or 11 seconds

 Feb 21, 2019

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