July 13th, 2017, 06:13 AM  #1 
Member Joined: Aug 2016 From: South Korea Posts: 51 Thanks: 0  Calculate Velocity 
July 13th, 2017, 06:16 AM  #2 
Math Team Joined: Jul 2011 From: Texas Posts: 2,656 Thanks: 1327 
velocity is the slope of each section of the position vs time graph 
July 13th, 2017, 06:30 AM  #3 
Senior Member Joined: Apr 2014 From: Glasgow Posts: 2,074 Thanks: 695 Math Focus: Physics, mathematical modelling, numerical and computational solutions 
Do you know how to get the gradient of a straight line? If not, you'll want to revise that topic first. Give us a shout if you're not sure.

July 13th, 2017, 06:49 AM  #4 
Member Joined: Aug 2016 From: South Korea Posts: 51 Thanks: 0 
My answer is A: 2km/sec. N of E B: 1.2km/sec. East C: 0.14m/sec. N of W D: 1.33m/sec. East How is it? Have I done it right? O.o 
July 13th, 2017, 07:45 AM  #5 
Math Team Joined: Jul 2011 From: Texas Posts: 2,656 Thanks: 1327 
fyi, the graph represents motion in one dimension ... unless you have additional information, all you can say is that the velocity is moving in the negative direction, positive direction, or at rest. the object is at rest during time intervals B and D the object is moving in the positive direction during time intervals A and E the object is moving in the negative direction during time interval C 

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