heart Posted August 27, 2008 Report Share Posted August 27, 2008 Hey I have this question on my mind that is really bothering me. Maybe some people here can help. If X is reduced by a factor of 4, does it become 1/4X or 3/4X? Similarly, if X is increased by a factor of 4, does it become 4X or 5X? Thanks in advance. Link to comment Share on other sites More sharing options...
The Law Posted August 27, 2008 Report Share Posted August 27, 2008 If x is reduced by a factor of four, that means that it is now one quarter its initial value. This is equal to saying (1/4)x (i.e. one quarter of x). If X is increased by a factor of four, you are saying that X is four times larger than it was before. This is equal to 4x (four times larger). Link to comment Share on other sites More sharing options...
heart Posted August 27, 2008 Author Report Share Posted August 27, 2008 If x is reduced by a factor of four, that means that it is now one quarter its initial value. This is equal to saying (1/4)x (i.e. one quarter of x). If X is increased by a factor of four, you are saying that X is four times larger than it was before. This is equal to 4x (four times larger). Ah, I get it now. I was confused by the way the answer key was written by Examkrackers. According to Examkrackers, "when the force of air resistance is F..." & "when the air resistance is reduced by a factor of 4, the net force must be F -1/4F = 3/4F." I was confusing the Fnet w/ Fair resistance. Thank you so much. I thought I had these ideas wrong all along. Now I know I was right, I just didn't get the answer key. Thanks again the law. Link to comment Share on other sites More sharing options...
The Law Posted August 28, 2008 Report Share Posted August 28, 2008 No problem heart. Physics can make you forget things that you definitely know. Link to comment Share on other sites More sharing options...
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