Posted by Anonymous on Wednesday, September 15, 2010 at 10:57pm.
The distance = (1/2)*(acceleration)*(time)^2 + (initial velocity)*(time)
distance= 2m
find acceleration.
They have provided more information than you need to answer the question. That is to done to give you practice in knowing what to use and what to ignore.
The average speed is 2/1.5 = 4/3 m/s. The final speed is twice that, or 8/3 m/s
The acceleration is the final speed divided by the time
a = (8/3)/(3/2) = 16/9 = 1.78 m/s^2
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