Somebody solve this for me.
#1
*cough*deepakw*cough*Kakashi*cough*

A 1200 kg vehicle uses its brakes to stop from a speed of 26.2 m/s in 1.25 seconds, of the brakes' mass is 2.5 kg and their starting temperature is 25 degrees Celsius, what is their final temperature?

I have an idea as to how to go about it, but I'm not sure. I've never had a question like this before.
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#2
No. Go on Yahoo Answers.
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#3
Too slow. My exam is tomorrow.
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#4
Why would anyone care what temperature it is?
[Image: 2nrmza9.jpg]
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#5
(06-19-2013, 08:48 PM)Cocobanana link Wrote:Why would anyone care what temperature it is?
Engineers would care to make sure that the temperature isn't too hot.

The better question would be "Why would YOU care what temperature it is?" The "YOU" being Zarquad.
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#6
Ask your instructor
Pokemon Voyage IDs: 4 and 18
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#7
(06-19-2013, 11:44 PM)TheZanker link Wrote:Ask your instructor
LOOOOOOL. "INSTRUCTOR." +REP.
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#8
391.101 degrees celsius assuming the brakes are made up of steel with specific heat around ~450 J/kg C.

Just apply law of conservation of energy.
An arrow can only be shot by pulling it back. So when life is dragging you back with difficulties, it means that it's going to launch you into something great. Just focus and keep aiming!<br />- Anon
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#9
Show me your work. ;-; The masses are confusing me.
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#10
Total Energy(before brakes applied)=Total energy(after halt)

0.5*1200*(26.2)^2=2.5*450*(Tf - 25)
An arrow can only be shot by pulling it back. So when life is dragging you back with difficulties, it means that it's going to launch you into something great. Just focus and keep aiming!<br />- Anon
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