Review I Constants Previous Answers A boat of mass 250 kg is coasting, with its engine in neutral, through the water at speed 1.00 m/s Submit when it starts to rain with incredible intensity. The rain is falling vertically, and it accumulates in the boat at the rate of 100 kg/hr . v Correct The boat is subject to an external force, the drag force due to water resistance, and therefore its momentum is not conserved. Part C The drag is proportional to the square of the speed of the boat, in the form Fa = bv² where b= 0.5 N· s² /m². What is the acceleration of the boat just after the rain starts? Take the positive a axis along the direction of motion. Express your answer in meters per second per second.
Review I Constants Previous Answers A boat of mass 250 kg is coasting, with its engine in neutral, through the water at speed 1.00 m/s Submit when it starts to rain with incredible intensity. The rain is falling vertically, and it accumulates in the boat at the rate of 100 kg/hr . v Correct The boat is subject to an external force, the drag force due to water resistance, and therefore its momentum is not conserved. Part C The drag is proportional to the square of the speed of the boat, in the form Fa = bv² where b= 0.5 N· s² /m². What is the acceleration of the boat just after the rain starts? Take the positive a axis along the direction of motion. Express your answer in meters per second per second.
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Previous Answers
A boat of mass 250 kg is coasting, with its engine
in neutral, through the water at speed 1.00 m/s
when it starts to rain with incredible intensity. The
rain is falling vertically, and it accumulates in the
boat at the rate of 100 kg/hr .
Correct
The boat is subject to an external force, the drag force due to water resistance, and therefore its
momentum is not conserved.
Part C
The drag is proportional to the square of the speed of the boat, in the form Fa = bu? where b = 0.5 N. s2 /m2.
What is the acceleration of the boat just after the rain starts? Take the positive x axis along the direction of
motion.
Express your answer in meters per second per second.
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V ΑΣφ
?
-3
2• 10
m/s?
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