BASIC物理!!20!

2008-09-19 4:56 am
請問以下幾題既點計...請詳細例出steps同原因...

Q1:
a motor car traveling at 14m/s on dry flat surface should be able to stop in14 m.assuming the deceleration to be uniform,calculate:
(A)its valur and the correspoding baking time
(B)the distance traveled during the first second after the application of the barkes.

Q2:the velocity of a body increases uniformly from 4.5m/s to 11.5 m/s while it travels 100m,calculate:
(A)the acceleration
(B)the time taken

Q3: A car ,starting from rest , accelerates uniformly at 2 m/s for 10s.,calculate:
(A)the distance travelled
(B)the final speed

回答 (1)

2008-09-19 7:01 am
✔ 最佳答案
Explanation as follows:

圖片參考:http://i238.photobucket.com/albums/ff245/chocolate328154/Phy050.jpg?t=1221750038
參考: My Phy Knowledge


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