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Sedbober [7]
3 years ago
8

Anna applies the brakes of her car , the car slows down uniformly from 15 m / s to rest in 2.5 s . How many metres before a stop

sign must she apply her brakes ?​
Mathematics
2 answers:
ladessa [460]3 years ago
8 0

Answer:

<em>given information</em>

u=15m/ sec

v=0

t=2.5 sec

s=?

acceleration will be negative.

------------------------------------------

applying <em>v=u+at</em>

0=15+a x 2.5

-15=2.5a

a=-15/2.5

a= - 6m/sec

----------------------------

applying<em> v^2= u^2+2as</em>

0= 225+2x (-6) x s

s=225/12= 18.75 metre.

-------------------------------------

<em>mark this as brainliest!!!!</em>

<em>follow</em><em> </em><em>me</em><em>!</em>

irakobra [83]3 years ago
5 0

Answer:

6 meters

Step-by-step explanation:

The answer is 6 meters. Hope this helps!

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