Jharkhand PSC Prelim Exam 2008 Solved Paper

Question : 87 of 100

Marks: +1, -0

A man moves sprung from steady boat at a speed of 5 km/s and boat moves dodge at speed of 0.5 m/s. Describe how the boat’s mass times, of the mass of human beings?

5.5 times
4.5 times
2.5 times
4 times

Validate

Solution:

(4) Suppose the mass of man is

{m}

and the mass of the boat is M.
∴ Speed of Man

=m × 5

Speed of Boat = M × 0.5

∴ 5 \; {m}=0.5 {m}

∴ \; {M} \/ {m}=10

∴ \;\; {M}=10 \; {m}

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