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JulsSmile [24]
3 years ago
8

Somebody please answer quick

Mathematics
1 answer:
Papessa [141]3 years ago
8 0
The third one is the answer
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A police cruiser is traveling at 20.0 m/s when the officer spies a speeder. The cruiser accelerates at 3.0 m/s^2 for 5.0 seconds
Tema [17]

For the first 5.0 seconds, the cruiser covers a distance of

\left(20.0\dfrac{\rm m}{\rm s}\right)(5.0\,\mathrm s)+\dfrac12\left(3.0\dfrac{\rm m}{\mathrm s^2}\right)(5.0\,\mathrm s)^2=137.5\,\mathrm m

At this point, the cruiser will have achieved a velocity of

\left(20.0\dfrac{\rm m}{\rm s}\right)+\left(3.0\dfrac{\rm m}{\mathrm s^2}\right)(5.0\,\mathrm s)=35\dfrac{\rm m}{\rm s}

The cruiser will take

\left(35\dfrac{\rm m}{\rm s}\right)-\left(5.0\dfrac{\rm m}{\mathrm s^2}\right)t=0\implies t=7.0\,\mathrm s

to come to a stop as it decelerates. It will have covered a total distance of

(137.5\,\mathrm m)+\left(35\dfrac{\rm m}{\rm s}\right)(7.0\,\mathrm s)+\dfrac12\left(-5.0\dfrac{\rm m}{\mathrm s^2}\right)(7.0\,\mathrm s)^2=\boxed{260\,\mathrm m}

8 0
3 years ago
A student rewrote 5 (8 + 3) as
kotykmax [81]
It is D , 5 x 8 = 40, 5 x 3 = 15
7 0
2 years ago
Martha is buying hot dogs and buns for the class barbecue. The hot dogs come in packages of 10. The buns come in packages of 12.
Oliga [24]
Least number is 120 and 12 packs of hot dogs and 10 packs of buns
5 0
3 years ago
Read 2 more answers
I need some help!?!?!?!?!?
Vikki [24]

Answer:

y=12.5h+3.8    h = 0.08 y − 0.304

Step-by-step explanation:

I think that is the answer

5 0
3 years ago
Read 2 more answers
50 out of 125 eighth graders took summer school. what is the ratio eighth graders who took summer school to the total number of
eduard

Answer:

1 : 2.5

Step-by-step explanation:

All you have to do is 125/50 to get 2.5. So that means for every 2.5 eighth grader there is 1 eighth grader in summer school.

Hope this helped!!

5 0
3 years ago
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