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mezya [45]
3 years ago
9

Which of the following shows a car holding a steady speed

Physics
2 answers:
antiseptic1488 [7]3 years ago
6 0

The answer is the velocity that is in a straight horizontal line.

Ne4ueva [31]3 years ago
6 0

The second one as the velocity doesn't change over time.

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Artificial gravity is created by rotating the cylinder

So here we can say that the acceleration is due to centripetal acceleration

So here we know that the formula of centripetal acceleration is given by

a_c = \frac{v^2}{R}

so here we know that

a_c = 9.8 m/s^2

v = 30.9 m/s

now we will plug in all values

9.8 = \frac{30.9^2}{R}

R = \frac{30.9^2}{9.8}

R = 97.43 m

So above is the radius of the cylinder

Now to find the diameter

d = 2R

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A rolling ball will eventually come to a stop. Why does this happen?
Digiron [165]

Answer:

(D) friction from the ground changes the ball's

kinetic energy into heat

Explanation:

When a ball is roll on the ground, the electrons in the atoms on the surface of the ground push against the electrons in the atoms on the surface of your ball that is touching the ground. A rolling ball stops because the surface on which it rolls resists its motion,that is when two surfaces come in contact with each other, the surface of one tends to oppose the motion of the other. A rolling ball stops because of friction.

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c

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On a smooth horizontal floor, an object slides into a spring which is attached to another mass that is initially stationary. Whe
HACTEHA [7]

Answer:

E) momentum and mechanical energy

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The kinetic energy and momentum of the system after collision and the kinetic energy and momentum of the two masses before collision will be constant.

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