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A truck is moving 14 m/s to the south. If it takes the truck 20 seconds to reduce its velocity to 10 m/s south, what is its acceleration?

1 Answer

Nov 22, 2015

#-0.2m#/#s^2#

Explanation:

What is given to us?
Initial velocity: #14m#/#s#
Final velocity: #10m#/#s#
Time: #20s#

We can use the equation Vf=Vi+at

#10=14+20(a)#

#-4=20(a)#

#-4/20=a#

#-0.2=a#

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