Laws Of Motion Question 61

Question: A ship of mass 3×107kg initially at rest is pulled by a force of 5×104N through a distance of 3 m. Assume that the resistance due to water is negligible, the speed of the ship is [IIT 1980; MP PMT 2000]

Options:

A) 1.5 m/s

B) 60 m/s

C) 0.1 m/s

D) 5 m/s

Show Answer

Answer:

Correct Answer: C

Solution:

v2=2as=2(Fm) s

[As u=0]

therefore v2=2(5×1043×107)×3=1100

therefore v=0.1 m/s



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