While launching a rocket of mass 2×104 kg, a force of 5×105 N is applied for 20s. Calculate the velocity attained by the rockets at the end of 20s.

While launching a rocket of mass 2×104 kg, a force of 5×105 N is applied for 20s. Calculate the velocity attained by the rockets at the end of 20s. Correct Answer 500m/s

m = 2×104kg F = 5×105N t = 20s u = 0 v = ? Impulse of force = F×t = m(v-u) 5×105×20 = 2×104(v-0) v = 500m/s.
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The Proper sequence should be:
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