SOLUTION: If a man travels with a velocity of 20 m/s [west] for 10 seconds and then without stopping accelerates at 3 m/s^2 [east] for 4 seconds, what is his total displacement?

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Question 1110272: If a man travels with a velocity of 20 m/s [west] for 10 seconds and then without stopping accelerates at 3 m/s^2 [east] for 4 seconds, what is his total displacement?
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Let's break it up.
For the first 10 seconds,
D=v%2At
D%5B1%5D=20%2810%29=200
For the next 4 seconds,
D=v%5Bi%5D%2At%2B%281%2F2%29at%5E2
D%5B2%5D=20%284%29%2B%281%2F2%29%28-3%29%284%29%5E2
D%5B2%5D=80-24
D%5B2%5D=56
So,
D=200%2B56
D=256
256 meters west of start point