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.
** **
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 in the direction of motion, as well as its component perpendicular to the direction of motion.
answer/question/discussion:
• Suppose you are facing in the direction of motion. Do you perceive the component of the force in the direction of motion to be forward or backward? It this component in the direction of motion or opposite to the direction of motion?
The force would be forward to me,
You need to describe your sketch and explain how your answer is related to your sketch.
answer/question/discussion:
• Will the object speed up, slow down or maintain a constant speed?
The object will maintain a constant speed.
The acceleration of an object is equal to the net force acting on it, divided by its mass. If the net force is not zero, then the acceleration is not zero and the velocity is not constant.
Speed might be constant--in some cases a force can change the direction but not the speed of an object--but velocity cannot be constant.
In any case there are only three possible answers here, and you must explain the reasoning behind your choice.
answer/question/discussion:
• If you are facing in the direction of motion, then the directions perpendicular to the direction of motion will be to your right and to your left. Is the component of the force perpendicular to the direction of motion to the right or to the left?
Perpendicular is 90 degrees away. In this case the direction of motion would be both right and left.
The question asks about the force relative to the direcion of motion. It does not ask about the direction of motion itself.
answer/question/discussion:
• Will the veer to the right, to the left or maintain straight-line motion?
This will be a straight line motion.
You need to explain your reasoning. It would be best if you connected your reasoning to the sketch you made.
answer/question/discussion:
• Which is greater in magnitude, the component of the force along the line of motion or the component perpendicular to the line of motion?
The component of force perpendicular to the line of motion will be a greater magnitude.
again reasoning must be explained
answer/question/discussion:
** **
5 minutes
** **
You need much more explanation on this problem. Be very sure you have constructed the sketch. As advised previously you should review the presentation of vectors in the introductory chapter.