Form 4 physicis

👨🏻‍🏫 學術台其他 - 科學

michelle

2007-09-29 4:26 am

A car accelerates uniformly from 6m/s to 12m/s in 3s.

1.Calculate the total distance

回答 (2)

eric199119911991

2007-09-29 4:33 am

✔ 最佳答案

u = 6
v = 12
t = 3
by a = (v-u) / t
a = (12 - 6) / 3
a = 2ms^-2
by s = ut+1/2at^2
s = (6)(3) + 1/2(2)(3)^2
total distance = 27m

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用戶55131

2007-09-29 5:32 am

Since accelerates uniformly,

s = (u + v) x t / 2

s = (6 + 12) x 3 / 2

s = 27 m

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