|
QUIZ 3 |
| 10. (a) These are the x and y components of the
resultant of the three given vectors. Rx = 24.0 and Ry
= 11.6 (b) the magnitude of the resultant is 26.7 and the angle is 25.8 degrees. The resultant points in the first quadrant. |
| 12. (a) x-component = -53.67, y-component =
1.31, Magnitude = 53.7 . The vector points in the second
quadrant since the x-component is negative and the y-component is
positive. The related angle is 1.4 degrees. (b) x-component = 53.67, y-component = -1.31, Magnitude = 53.7 . The vector points in the fourth quadrant since the x-component is positive and the y-component is negative. The related angle is 1.4 degrees. |
| 18. 44 m = height of cliff. The horizontal displacement (change in x) = 5.4 m. |
| 20. 5.2 m/s |
| 22. 2.11 seconds. |
| 24. (a) V0 = 9.60 m/s (b) new R = 8.60 m, so there is an increase of 0.80 m, about 10 % increase. |
| 64. change in x = 18.8 m, between 15.0 m and 22.0 m. |