Laws of Motion 5 Question 6

6. A ship of mass 3×107kg initially at rest, is pulled by a force of 5×104N through a distance of 3m. Assuming that the resistance due to water is negligible, the speed of the ship is

(a) 1.5m/s

(b) 60m/s

(c) 0.1m/s

(d) 5m/s

(1980, 2M)

Objective Questions II (One or more correct option)

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Answer:

Correct Answer: 6. (b, d)

Solution:

  1. As, a=Fm=5×1043×107=53×103m/s2

So, v=2as=2×53×103×3=0.1m/s



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