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2 years ago

A 2-kg ball is thrown at a speed of ____, exhibits 25j of kinetic energy.

Physics

1 answer:

bogdanovich [222]2 years ago

3 0

Answer:

A 2-kg ball is thrown at a speed of 5 m/s, exhibits 25 J of kinetic energy.

Explanation:

Given that,

The mass of a ball, m = 2 kg

Kinetic energy of the ball, K = 25 J

We need to find the speed of the ball. The formula for the kinetic energy is given by :

$K=\dfrac{1}{2}mv^2\\\\v=\sqrt{\dfrac{2K}{m}} \\\\v=\sqrt{\dfrac{2\times 25}{2}} \\\\v=5\ m/s$

So,

A 2-kg ball is thrown at a speed of 5 m/s, exhibits 25 J of kinetic energy.

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Answer:

100,048

Explanation:

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K.E = 100,048J =100.048kJ

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2 years ago

"Which of the following statements about electrons is not true?

gogolik [260]

Answer:

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Explanation:

As we know that electrons have energy but apart from electrons we know that protons and neutrons inside the nucleus of atom will also have energy in them.

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D) An electron has a negative electrical charge.

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2 years ago

in the diagram, the solid eventually becomes a gas. what will happen to bring the substance from a solid to a gas?

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3 years ago

HELP ME PLEASE, I'M BEING TIMED FAST

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Answer:

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Explanation:

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Note: This is one of the reasons why space agencies are studying spatial asteroids that are directed toward the earth, as these come with great kinetic energy, and great potential energy, if these are of a considerable size can cause catastrophic damage, even if they fall into the ocean, due to the large amount of energy which can cause the instantaneous evaporation of large amounts of water and collateral damage in other areas.

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2 years ago

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Juli2301 [7.4K]

Answer:

its a negative work, not a negative force

Explanation:

I took the quiz first i put negative force i got it wrong

then when i put negative work it was right

Hope it help:)♥︎ plz mark me as brainliest

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3 years ago