Yahoo奇摩 網頁搜尋

  1. 排列方式

  1. ... on at this constant velocity of 25 ms⁻¹ for 10 sec, Then, it decelerates at -25/(25-15) = -2.5 ms⁻², until it stops after another 10 sec. ...

  2. ...should first find the distance traveled by the lift when it accelerate and decelerate, by s = ut+0.5at^2 whwn the lift ...

  3. ...ma =>R-mg= m(a') =>R=mg+ma' > mg Case 3 : decelerating F=ma =>R-mg=m(-a') =>R=mg-ma'<mg...

  4. ...distance First find the thinking distance by s = vt. As the car decelerates at a uniform rate, we can apply the equations of motions to calculate...

  5. ...when accelerated to a certain speed, moves at a uniform speed before it decelerates when reaching the next station. Since the man stands without...

  6. ... oppsite tothe direction of motion of the car. By -f=ma,a=-f/m,thus the car decelerates. Also as the car is decelerating,the car get hot as the ...

  7. a. Consider the journey when decelerating. Initial speed, u = 18 ms-1 Final speed, v = 0 Acceleration...

  8. ... the car first accelerates uniformly from rest at a, and then decelerates uniformly at -a. By symmetry, the time taken during the acceleration stage ...

  9. ... cycling uniformly, d = 9 X 6 = 54 m So, the distance to decelerate, s = 108 - 54 = 54 m By s = (u + v)t / 2 54 = (9 + 0)t / 2 Time...

  10. ..., the distance travelled by the bicycle when it is decelerating is 10 m. 2008-06-22 13:13:52 補充: Since the bicycle is...