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Asked by raul

A boat of mass 40 kg is at rest; A dog of mass 4 kg moves in the boat with a velocity of 10 m/s. what is the velocity of boat?
a) 4 m/s b) 2 m/s
c) 8 m/s d) 1 m/s
12 years ago

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Answered by Elena
mv=(m+M)u
u=mv/(m+M) = 4•10/(4+40) = 0.9 m/s
d) 1 m/s
12 years ago
Answered by Bishal
D) 1m/s
9 years ago
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A boat of mass 40 kg is at rest; A dog of mass 4 kg moves in the boat with a velocity of 10 m/s. what is the velocity of boat?
a) 4 m/s b) 2 m/s
c) 8 m/s d) 1 m/s

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