Asked by ayushikas | 12th Mar, 2010, 02:36: PM
Acceleration = a = F/m = 20/5 = 4 m/s2.
Initial velocity = u = 0.
Time = t = 10 sec.
Displacement = S = ut + (1/2)at2 = (1/2)(4)(100) = 200 m.
Work done = ForcexDisplacement = (20)(200) = 4000 J.
Work done = Kinetic energy = 4000 J = 4 kJ.
Answered by | 13th Mar, 2010, 04:05: PM
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