The speed of a motor vehicle falls uniformly from 28 m/s to zero at 3 m/s2. Calculate:
a) the time taken for the vehicle to stop
b) the distance travelled.
Mechanics
2013-09-30 12:51 am
回答 (1)
2013-09-30 1:11 am
✔ 最佳答案
v = v0 + at0 = 28 + (-3)t
t = 28 / 3 = 9.33 sec
v2 = v02 + 2aS
0 = 28^2 + 2(-3)S
S = 130.7 m
收錄日期: 2021-04-27 20:35:57
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