Question

9. A person stands on a scale in an elevator that is moving. The person's mass is 80.0 kgand the scale reads 600N. Assuming the acceleration due to gravity is 9.8 m/s^2 what are the magnitude and acceleration of the elevator? a. 3.0 m/s^2 downward b. 2.3 m/s^2 downward c. 2.9 m/s^2 downward d. 7.5 m/s^2 upward e. 7.5 m/s^2 downward 10. Two identical boxes are sliding across the same floor at the same speed. Box A contains a 20.0 kg mass and box B contains a 10.0 kg mass. Which box will kinetic friction force stop first. a. Box A b. Box B c. Both boxes will stop at the same time d. More information is needed to answer this question e. The answer depends on the magnitude of the coefficient of friction 11. An object is acted upon by a drag force with a magnitude that is proportional to its speed. The object accelerates downward at 3.0 m/s^2 when it is falling with a speed of 20.0 m/s. What is the terminal speed of the object as it is falling? Use g = 9.8 m/s^2 a. 38.1 m/s b. 55.9 m/s

          9. A person stands on a scale in an elevator that is moving. The person's mass is 80.0 kgand
the scale reads 600N. Assuming the acceleration due to gravity is 9.8 m/s^2 what are the
magnitude and acceleration of the elevator?
a. 3.0 m/s^2 downward
b. 2.3 m/s^2 downward
c. 2.9 m/s^2 downward
d. 7.5 m/s^2 upward
e. 7.5 m/s^2 downward
10. Two identical boxes are sliding across the same floor at the same speed. Box A contains a
20.0 kg mass and box B contains a 10.0 kg mass. Which box will kinetic friction force stop
first.
a. Box A
b. Box B
c. Both boxes will stop at the same time
d. More information is needed to answer this question
e. The answer depends on the magnitude of the coefficient of friction
11. An object is acted upon by a drag force with a magnitude that is proportional to its speed.
The object accelerates downward at 3.0 m/s^2 when it is falling with a speed of 20.0 m/s.
What is the terminal speed of the object as it is falling? Use g = 9.8 m/s^2
a. 38.1 m/s
b. 55.9 m/s

9. A person stands on a scale in an elevator that is moving. The person's mass is 80.0 kgand
the scale reads 600N. Assuming the acceleration due to gravity is 9.8 m/s^2 what are the
magnitude and acceleration of the elevator?
a. 3.0 m/s^2 downward
b. 2.3 m/s^2 downward
c. 2.9 m/s^2 downward
d. 7.5 m/s^2 upward
e. 7.5 m/s^2 downward
10. Two identical boxes are sliding across the same floor at the same speed. Box A contains a
20.0 kg mass and box B contains a 10.0 kg mass. Which box will kinetic friction force stop
first.
a. Box A
b. Box B
c. Both boxes will stop at the same time
d. More information is needed to answer this question
e. The answer depends on the magnitude of the coefficient of friction
11. An object is acted upon by a drag force with a magnitude that is proportional to its speed.
The object accelerates downward at 3.0 m/s^2 when it is falling with a speed of 20.0 m/s.
What is the terminal speed of the object as it is falling? Use g = 9.8 m/s^2
a. 38.1 m/s
b. 55.9 m/s

Added by Eric L.

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