are these all right? C) changing direction. E) slowing down and changing directi

Question

are these all right?

C) changing direction. E) slowing down and changing direction. D) speedng up and Cnangl ertical cable is moving downward but slowing down. The sion in the cable must be reater than the weight of the elevator. B) less than the weight of the elevator. D) none of these is correct. C) equal to the weight of the elevator. 9) A crate is sliding down an inclined ramp at a constant speed of 0.55 m/s. The vector sum of all the forces acting on this crate must point A) down the ramp. perpendicular to the ramp. B) up the ramp D) vertically downward E) None of the above choices is correct 10) A bucket is being lowered by a very light rope with a constant downward velocity. The tension in the rope must be A equal to the weight of the bucket B) greater than the weight of the bucket. C) less than the weight of the bucket. D) None of the above choices is correct. 11) An object of mass m rests on a flat table. The earth pulls on this object with a force of maenitude mg What is the reaction force to this pull?

Explanation / Answer

8) Option A

9) Option E: Since velocity is constant, there will be no acceleration. Force is proportional to acceleration, so it will eventually be zero. Therefore option E

10) Option A

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