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Amiraneli [1.4K]
3 years ago
7

Can someone plz help me on this, it would me alot to me thx

Physics
1 answer:
AlexFokin [52]3 years ago
6 0

Answer:

its a opinonated question

Explanation:

XD

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A sled of mass 10 kg slides along the ice. it has an initial speed of 2 m/s but stops because of friction. How much work is done
NeX [460]

Answer: The correct answer is option B.

Explanation:

Mass of the sled = 10 kg

Initial speed of the sled = 2 m/s

Kinetic energy of the sled = \frac{1}{2}mv^2

\frac{1}{2}\times 10 kg\times (2 m/s)^2=20 Joules

Work done by the sled = 20 joules

The work done by the friction will be in opposite direction and equal to the magnitude of the work done of the sled that - 20 J.

Hence, correct answer is option B.

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3 years ago
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Answer:

(C) apparently written incorrectly - it should be 29.9 +- .3 K

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When we speak through the microphone, it turns our sound into some sort of electronic wave.
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