|
QUIZ 4 |
| 38. 140 m/s. |
| 40. (a) 25.5 degrees south of east (b) 190 seconds, a little over three minutes (c) 380 m |
| 8. The force is 46.7 N, directed opposite to the motion of the skater |
| 36. see notes |
| 48. 4330 (N) |
| 50. (a) The velocity of the spacecraft is
downward. When it is slowing down, the acceleration is upward. When it
is speeding up, the acceleration is downward. |