Posted by nicky on Wednesday, September 19, 2012 at 1:11pm.
acceleration is (change in velocity)/(time used)
That is, keeping track of the units,
acceleration(m/s^2) = velocity(m/s) / time(s)
a) (4-2)m/s / 4s = 2m/s / 4s = 1/2 m/s^2
Do the others in like wise. Come on back if you get stuck, or just want confirmation of your answers.
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