- 最後登錄
- 2024-5-12
- 在線時間
- 0 小時
- 註冊時間
- 2008-3-2
- 閱讀權限
- 95
- 精華
- 0
- UID
- 3646934
- 帖子
- 69
- 積分
- 1000 點
- 潛水值
- 23602 米
| 成為伊莉的版主,你將獲得更高級和無限的權限。把你感興趣的版面一步步地發展和豐盛,那種滿足感等著你來嚐嚐喔。 When the traffic light turns green, a car accelerates from rest at a rate of 2.0ms-2. At the same time, a truck, moving at a constant speed of 10ms-2, passes the traffic light, which just turns green, and overtakes the car. Since the car moves with increasing speed, it will overtake the truck some times later.
(a) At what distance from the traffic light will the car overtake the truck?
(b) What is the speed of the car at that instant? |
|