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Arada [10]
3 years ago
14

Read through the scenarios below and calculate the predicted change in kinetic energy of the object compared to a 50 kg ball tra

veling at 10 m/s. A 50 kg ball traveling at 20 m/s would have kinetic energy. A 50 kg ball traveling at 5 m/s would have kinetic energy. A 50 kg person falling at 10 m/s would have kinetic energy.

Physics
2 answers:
Tasya [4]3 years ago
5 0

The formula for kinetic energy is  KE = (1/2) (mass) (speed²)

== The 50 kg ball traveling at 10 m/s has <em>some</em> kinetic energy.  

== A 50 kg ball traveling at 20 m/s would be moving at double the speed.  So it would have (2)² = <em>4 times as much</em> kinetic energy.

== A 50 kg ball traveling at 5 m/s would be moving at 1/2 the speed. So it would have (1/2)² = <em>1/4 as much</em> kinetic energy.

== A 50 kg <u>person</u> falling at 10 m/s would have <em>exactly the same</em> amount of kinetic energy as the 50 kg <u>ball</u> traveling at 10 m/s.

Kisachek [45]3 years ago
3 0

A 50 kg ball traveling at 20 m/s would have <u>4 times more</u> kinetic energy.

A 50 kg ball traveling at 5 m/s would have <u>4 times less</u> kinetic energy.

A 50 kg person falling at 10 m/s would have <u>the same</u> kinetic energy.

Why?

Because:

<em>                                                #HappyCheating </em>

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I think is True! Is the best answer. Because the trumpet it make them sounds like the lips with the musician and it vibrate.
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3 years ago
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your friend wants to know the amount of salt added to her favorite fast food French fries. what would you recommend that she do
jeka94

Every fast-food chain is required by law to make the nutrition content of the
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My friend should walk into her favorite place, or into the nearest McRonald's,
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To be nice about it, she should do this at a time when the place is not too busy,
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<em>right now</em>.

Under the french fries, look at the serving size, and the figure for "Sodium"
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5 0
3 years ago
Suppose that a rectangular toroid has 2,000 windings and a self-inductance of 0.060 H. If the height of the rectangular toroid i
andrey2020 [161]

Answer:

0.01154 A

Explanation:

We have given the energy in the magnetic field U=4\times 10^{-6}J

Value of inductance L =0.060 H

Energy stored in magnetic field is given by U=\frac{1}{2}Li^2

i=\sqrt{\frac{2U}{L}}

i=\sqrt{\frac{2\times 4\times 10^{-6}}{0.06}}=0.01154\ A

So the current flowing through rectangular toroid will be 0.01154 A

3 0
3 years ago
An electrical appliance draws 9.0 amperes of current when connected to a 120-volt
Lemur [1.5K]

Answer:

The correct answer is "1080 W".

Explanation:

Given:

Current,

I = 9.0 A

Potential difference,

V = 120 volt

As we know,

⇒ Power=IV

On substituting the values, we get

⇒             =120\times 9.0

⇒             =1080 \ W

4 0
3 years ago
Some volcanic eruptions are quiet and others are violent what causes this difference?
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kwrob
7 0
3 years ago
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