A ship of mass 3 x 107 kg initially at rest is pulled by a force of 5x 104 N through a distance of 3 m. Assuming that the resistance due to water is negligible, what will be the speed of the ship ?
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a
0.1 m/s
b
1.5 m/s
c
5 m/s
d
0.2 m/s
answer is A.
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Detailed Solution
a=Fm=5×1043×107=53×10−3m/s2Now v2=u2+2as or v2=0+2×(5/3)×10−3×3 v=10−1m/s.