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lana66690 [7]
3 years ago
14

Why will air sink if it is colder than the air around it? ​

Physics
1 answer:
yawa3891 [41]3 years ago
8 0

Answer:

The molecules in hot air are moving faster than the molecules in cold air.

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If the kinetic energy of the 40kg box is 784 J, what is the velocity before it strikes the ground?
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Answer:

Explanation:

KE=\frac{1}{2}mv^2

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v=6.26m/s

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3 years ago
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The kinetic energy and gravitational potential energy changes during its movement from ground to the top height.

<h3>What happens to kinetic and potential energy while motion?</h3>

When the ball moves upward, its gravitational potential energy is increases and kinetic energy begins to decrease but when the ball falls towards the earth, its gravitational potential energy is transformed into kinetic energy. When the ball collides with the ground, the kinetic energy is transformed into other forms of energy.

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5 0
2 years ago
Please help me answer this question
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rotates faster

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