1. An applied force of F = (-6 N)i – (2 N)j caused the object to moves a displacement of d = (3 m)î + (1 m)j. Determine the work done on the object and the angle between F and d.

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Chapter1: Units, Trigonometry. And Vectors
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1. An applied force of F = (-6 N)î – (2 N)j caused the object to moves a displacement of
d = (3 m)î + (1 m)j. Determine the work done on the object and the angle between F and d.
2. The train's electric motor moves the train from rest to 0.620 m/s in 21 milliseconds. Find
the average power supplied to the 875 g train during the acceleration.
3. A box with a mass of 3000 g slides down the slope. The slope is inclined at an angle of 30
degrees and has a length of 1 meter. The box starts from rest at the top, experiences a
constant force of friction with a magnitude 5.00 N, and begins to travel a short distance to
the horizontal floor after leaving the slope. Calculate the box's speed at the bottom of the
slope.
Transcribed Image Text:1. An applied force of F = (-6 N)î – (2 N)j caused the object to moves a displacement of d = (3 m)î + (1 m)j. Determine the work done on the object and the angle between F and d. 2. The train's electric motor moves the train from rest to 0.620 m/s in 21 milliseconds. Find the average power supplied to the 875 g train during the acceleration. 3. A box with a mass of 3000 g slides down the slope. The slope is inclined at an angle of 30 degrees and has a length of 1 meter. The box starts from rest at the top, experiences a constant force of friction with a magnitude 5.00 N, and begins to travel a short distance to the horizontal floor after leaving the slope. Calculate the box's speed at the bottom of the slope.
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