f.4,,,phy,,mechanics,,
2008-09-26 5:35 am
A car bedise a traffic light starts to move at a uniform acceleration of 2ms^-2 when the driver sees th traffic light turns green. It passes a stationary turck 2s later. Find the separation between the traffic light and the truck.
回答 (1)
2008-09-26 5:54 am
✔ 最佳答案
Initial speed of the car, u = 0Acceleration, a = 2 ms-2
Time, t = 2s
By s = ut + 1/2 at2
s = 0 + 1/2 (2)(2)2
Separation, s = 4 m
參考: Myself~~~
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