# Yahoo奇摩 網頁搜尋

1. ### Rebound

...i.e. with a common ratio of 2/3 So total time taken before the ball comes to rest is: T1 + T2 + T3 + ... = T1 + (4T1/3...

...we get, C = ln(13) thus, ln(4+3v) = ln(13) - 3t ---------- (1) when the particle comes to rest, v = 0 m/s ln(4) = ln(13) - 3t i.e. t = (1/3).ln(13/4) from (1): lm[(4+3v...

3. ### Movement~~~~~~~~~

...that moment of velocity = 30 m s^-1, it needs a further of 30/3.5 = 8.57 s to come to rest.

4. ### F.4 PHY

...06)S S=27.3M The car will travel 27.3m further before coming to rest. 2008-12-26 10:57:30 補充： 以上2位均沒有埋會further的意思.

5. ### X-ray tube

When an energetic electron comes near to a (tungsten) target atom, it is subjected to strong...and tungsten atoms also causes the target atom to gain in vibrational energy, which is manifested as...

6. ### 力學...mechanics

...1 after travelling a distance of 100m. How much more time will it take to come to rest? 2aS = v^2 -u^2 v = 30ms^-1; u = 40ms^-1 and S = 100m ...

7. ### phy ......work done

...mass 58kg steps off a 10 m high platform and dives into water. He comes to rest when he is 4m below the water surface. a) estimate the speed of Mr...

8. ### phy questions

...conservation of mechanical energy. When the elevator comes to a complete stop, (1/2)x(2000)x(4^2) + 2000g x 2 = 17000...0.07 N/m = 21.43 N/m (Take g to be 10 m/s^2) By energy conservation, 0.2g.(0.3...

9. ### ~~~~Mechanics question~~~~~

...1)-3x(2): 5u = 270 Hence, u = 54 m s-1 Consider that the object comes to rest. u = 54 m s-1 v = 0 m s-1 a = -2 m s-2 s = ? v2 = u2 + 2as (o) = (54)2 + 2...

10. ### S.4 Phy

...after travelling a distance of 100 m, and runs 80 m further before it comes to a stop. What is its speed at first? Answer...