What happens to the speed of the rail car as the sand pours out?

The car begins to roll faster

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The car maintains the same speed

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The car begins to slow down

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The problem cannot be solved since momentum is not conserved

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Solution

The correct option is B The car maintains the same speed
As the car is moving on straight , frictionless level track, so the speed of car will remain same during pouring sand. Therefore momentum of car alone is conserved.

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What happens to the speed of the rail car as the sand pours out?

The correct option is B The car maintains the same speedAs the car is moving on straight , frictionless level track, so the speed of car will remain same during pouring sand. Therefore momentum of car alone is conserved.

The correct option is B The car maintains the same speed
As the car is moving on straight , frictionless level track, so the speed of car will remain same during pouring sand. Therefore momentum of car alone is conserved.