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A `10 kg` boy standing in a `40 kg` boat floating on water is `20 m` away from the shore of the river. If the boy moves `8 m` on the boat towards the shore, then how far is he from the shore ? (Assume no friction between boat and water). |
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Answer» Mass of the boy `(m)=10 kg` Mass of the boat `(M)=40 kg` Distance travelled by boy `(l)=8 m` Distance travelled by the boat in opposite direction `=(ml)/(M+m)=(10xx8)/(10+40)=1.6 m` Distance of the boy from the shore is `(20-8)+(1.6)=13.6 m` |
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