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Juli2301 [7.4K]
3 years ago
12

A little girl slid down a playground slide, decreasing her potential energy by 1000 J while increasing her kinetic energy by onl

y 900 J. Why did she lose 100 J of mexhanical energy
Physics
2 answers:
Kaylis [27]3 years ago
8 0

Answer:

Due to friction, 100 joules were lost in the form of heat energy

Explanation:

The law of conservation of energy states that

<em>"Energy can neither be created or nor destroyed but rather it changes from one form to another"</em>

As the little girl was sliding down the playground slide, her potential energy was decreasing and at the same time her kinetic energy was accumulated. As we know there is friction in the slide and because of this not all of the of potential energy is converted into kinetic energy. Some of the energy will be lost due to friction taking the form of heat. Therefore, the 100 joules of energy was lost in the form of heat due to friction of the slide.

koban [17]3 years ago
5 0

Answer:

Explanation:

This is because The 100 J of potential energy that doesn't go into increasing her kinetic energy goes into thermal energy—heating her bottom and the slide.

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Answer:

The corridor's distance is "90 m".

Explanation:

  • She heads in the east directions but creates the first pause, meaning she crosses the distance 'x' in step 1.
  • Now, provided that perhaps the distance by her to another fountain or waterfall just after the first stop is twice as far away she traveled.
  • Because she moved the distance of 'x,' then, therefore, her distance towards the fountain of '2x.' She casually strolls and once again pauses 60 m beyond her stop.
  • The gap about her to the waterfall during that time approximately twice the distance and her to the eastern end of the hallway.
  • Assume her gap from either the east end of the platform seems to be 'y' at either the second stop, after which '2y' may become the distance between the 2nd pause and the waterfall.

Now,

⇒  2x + 2y = 60

⇒  x + y = 30

The total distance of the corridor will be:

=  x + 2x + 2y + y

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=  3\times 30

=  90 \ m

4 0
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suter [353]

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Explanation:

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Answer:

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