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1 year ago

A 4.0-kg object has 72 J of kinetic energy. Determine its speed.

Physics

1 answer:

Svetlanka [38]1 year ago

8 0

Answer:

6m/s

Explanation:

v = sqrt of 2KE/m

Where:

KE = kinetic energy

m = mass of a body

v = velocity of a body

= sqrt of 2(72)/4

= sqrt of 144/4

= sqrt of 36

= 6m/s

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Explanation:

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2 years ago

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2 years ago

A manufacturer of CD-ROM drives claims that the player can spin the disc as frequently as 1200 revolutions per minute.

Leya [2.2K]

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$a=\frac{v^2}{r}$

where we have

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Substituting numbers into the formula, we find

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2 years ago

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2 years ago

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Brut [27]

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2 years ago

Read 2 more answers