105J
2.5 x 103J
2 x 103J
5 x 103J
5 x 105J`
Correct answer is A
K.E = \(\frac{1}{2}\)mv2; m (at + u)2 since, v = at + u = \(\frac{1}{2}\) x 500 [(5 x 4)+ 0]2 = 105J
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