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# Help watch

1. Didn't put do this in class and I'm stuck on this kerboodle question.

Exact question is 4 The Highway Code states that the braking distance for a car travelling at 30 mph (13 m/s) is 14 m. Calculate the deceleration assumed by the Highway Code.

0.9 m/s
141 m/s
0.5m/s
6m/s That's the options
2. (Original post by Sraf)
Didn't put do this in class and I'm stuck on this kerboodle question.

Exact question is 4 The Highway Code states that the braking distance for a car travelling at 30 mph (13 m/s) is 14 m. Calculate the deceleration assumed by the Highway Code.

0.9 m/s
141 m/s
0.5m/s
6m/s That's the options
sounds like suvat fam
s-14
u-13
v-0
a-?
3. It’s just 13/14 which rounds to 0.9 m/s
4. It’s 0.5 as Deceleration = v1-v2 / 2s

13 - 0
——— = 13/28 = 0.46 -> 0.5
2(14)

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Updated: October 17, 2017
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