a body moving along a straight line at 20m/s undergoes an acceleration of 4m/s^2.After 2 seconds ,what will be its speed exactly after 2seconds?
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28ms 4*2 a*s 4 is a and and time for taken by a 2 therefor 2*4=8
8+20 staring speed = 28
8+20 staring speed = 28
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