A. 20.0kg ms−¹
B. 10.0kg ms−¹
C. 5.0kg ms−¹
D. 1.3kg ms−¹
E. 0.0kg ms−¹
Correct Answer:
Option A – 20.0kg ms−¹
Explanation
Impulse = Ft = mu – (-mu)
= mu + mu = 2mu = 2 x 5 x 2 = 20kgms-1
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