- #1
nevik
- 6
- 0
A motorist drives south at 24.0 m/s for 3.00 min, then turns west and travels at 25.0 m/s for 3.00 min, and finally travels northwest at 30.0 m/s for 1.00 min. For this 7.00 min trip, find the following values.
a) total vector displacement and degrees south of west.
For the displacement I try to find the total displacement southwest of the first two vectors which should be sqrt(72^2+75^2) and get 103.966. From there I draw a line 30m northwest of it and at the endpoint of that line I draw another line to the origin. This 3rd line should be the hypotenuse of the triangle so I try adding 103.96^2 + 30^2 and taking the square root of it to get 107.28m but when I enter it on webassign it says I'm ORDERS OF MAGNITUDE WRONG? No idea what I'm doing wrong here and I don't think I can solve the second part without the first part.
a) total vector displacement and degrees south of west.
For the displacement I try to find the total displacement southwest of the first two vectors which should be sqrt(72^2+75^2) and get 103.966. From there I draw a line 30m northwest of it and at the endpoint of that line I draw another line to the origin. This 3rd line should be the hypotenuse of the triangle so I try adding 103.96^2 + 30^2 and taking the square root of it to get 107.28m but when I enter it on webassign it says I'm ORDERS OF MAGNITUDE WRONG? No idea what I'm doing wrong here and I don't think I can solve the second part without the first part.
