3 years ago

Help ,!!!??!!????thanksssss

Physics

1 answer:

Airida [17]3 years ago

6 0

Answer:

i think it's B. Energy

Explanation:

hope this helps

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A 2 kg rubber ball is thrown at a wall horizontally at 3 m/s, and bounces back the way it came at an equal speed. A 2 kg clay ba

Lyrx [107]

Answer:

THE RUBBER BALL

Explanation:

From the question we are told that

The mass of the rubber ball is $m_r = 2 \ kg$

The initial speed of the rubber ball is $u = 3 \ m/s$

The final speed at which it bounces bank $v - 3 \ m/s$

The mass of the clay ball is $m_c = 2 \ kg$

The initial speed of the clay ball is $u = 3 \ m/s$

The final speed of the clay ball is $v = 0 \ m/s$

Generally Impulse is mathematically represented as

$I = \Delta p$

where $\Delta p$ is the change in the linear momentum so

$I = m(v-u)$

For the rubber is

$I_r = 2(-3 -3)$

$I_r = -12\ kg \cdot m/s$

=> $|I_r| = 12\ kg \cdot m/s$

For the clay ball

$I_c = 2(0-3)$

$I_c = -6 \ kg\cdot \ m/s$

=> $| I_c| = 6 \ kg\cdot \ m/s$

So from the above calculation the ball with the a higher magnitude of impulse is the rubber ball

8 0

3 years ago

a sponge and a bar of soap occupy the same amount of space, but the soap is much more dense than the sponge

Alex Ar [27]

Yes, that's correct. That's a big part of the reason why
the soap floats in water and the sponge sinks in it.

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3 years ago

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Which of the following sentences shows the correct use of a transition word? Even though I was sick, I went to the doctor. My sh

Softa [21]

Answer:

D. I stayed up late for several nights. Eventually, I was too tired to concentrate.

Explanation:

i got it right edge 2020.

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2 years ago

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What statement best describes how wind weathered this rock

Kisachek [45]

Answer:

the rock breaks down when the wind blows particles of sand against it.

Explanation:

because the sand can easily be decomposed and temperature easily accessible to it cause line of weaknesses of the rock to break down

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3 years ago

If a substance has an atomic mass of 20 and has an atomic number of 10, how many neutrons does this element have?

LiRa [457]

Explanation:

This element have 10 neutrons

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2 years ago