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Phy 231
Your 'cq_1_19.3' report has been received. Scroll down through the document to see any comments I might have inserted, and my final comment at the end.
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An object moving in the direction 120 degrees (as measured counterclockwise to the positive x axis) encounters a net force whose direction is 270 degrees.
Sketch the force and its component along the line of motion, as well as its component perpendicular to the line of motion.
answer/question/discussion: ->->->->->->->->->->->-> scussion:
If we tilt a set of axes so that we can define the direction of motion as the positive x-axis, then the net force is occuring at an angle of 270deg-120deg, or 150 degrees from our new tilted positive x-axis.
So that means we need to find the x- and y-components of the net force, as measured on our new axis. Without knowing the magnitude of the force, we can only say that the new x-component is in the negative direction (opposite the line of motion, 180 deg from the new positive x-axis or 120deg+180deg=300deg from the original positive x-axis) and the new y-component is in the positive direction (90deg from the new positive x-axis or 120deg+90deg=210deg from the original positive x-axis).
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Suppose you are facing in the direction of motion. Do you perceive the component of the force along the line of motion to be forward or backward? It this component in the direction of motion or opposite to the direction of motion?
answer/question/discussion: ->->->->->->->->->->->-> scussion:
I perceive the component along the line of motion to be backward.
It is opposite the direction of motion.
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Will the object speed up, slow down or maintain a constant speed?
answer/question/discussion: ->->->->->->->->->->->-> scussion:
The object will slow down as it encounters a net force opposite its direction of motion.
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If you are facing in the direction of motion, then the line perpendicular to the direction of motion will run to your right and to your left. Is the component of the force perpendicular to the line of motion directed to the right or to the left?
answer/question/discussion: ->->->->->->->->->->->-> scussion:
I perceive the component perpendicular to my motion to be directed to my left.
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Will the object veer to the right, to the left or maintain straight-line motion?
answer/question/discussion: ->->->->->->->->->->->-> scussion:
The object will veer to the left.
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Which is greater in magnitude, the component of the force along the line of motion or the component perpendicular to the line of motion?
answer/question/discussion: ->->->->->->->->->->->-> scussion:
The component along the line of motion is greater than the the component perpendicular to the line of motion.
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20 minutes
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&#Your work looks very good. Let me know if you have any questions. &#