A trolley containing water has total mass 4000, kg and is moving at a speed of 40, m/s .

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4-1.Newton's Laws of Motion

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A trolley containing water has total mass $4000\, kg$ and is moving at a speed of $40\, m/s$. Now water start coming out of a hole at the bottom of the trolley at the rate of $8\,kg/s$. Speed of trolley after $50\, s$ is ............ $m/s$

A$40$

B$44.44$

C$44$

D$54.44$

Solution

The momentum of the system in horizontal direction will not change.

Standard 11

Physics

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