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avatar+1832 

is the acceleration positive or negative  ? 

 

 Sep 15, 2015
 #1
avatar+98 
+1

the accelleration is positive

 Sep 15, 2015
 #2
avatar+33615 
0

Use s = u*t + (1/2)*a*t^2 where s = distance, u = initial velocity = -3 ft/s, t = 3 s and a = +2 ft/s2

 

i.e. acceleration is positive to the right as labby wrote.

 Sep 15, 2015
 #3
avatar+1832 
0

when the acceleration is in opposite direction of the velocity it must be negative ?!! right or not ? 

 Sep 15, 2015
 #4
avatar+1832 
0

Any farther exolnation ?

 Sep 16, 2015

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