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serious [3.7K]
3 years ago
12

Select the correct answers.

Physics
2 answers:
diamong [38]3 years ago
8 0

Answer:

decreases, increases, minimum (zero)

Explanation:

Kinetic energy of a body is directly proportional to the square of velocity of the body and the potential energy is directly proportional to the height  of the body at which it is placed.

The formula for the kinetic energy is

K = 1/2 m v^2

The formula for the potential energy is

U = m g  h

As the body goes up its kinetic energy decreases as the velocity of the object decreases.

As the body goes up the potential energy increases as the height increases.

At the top most point, the velocity of teh object is zero, so the kinetic energy at the top is zero.

dangina [55]3 years ago
6 0

Answer:

When you throw a ball upward, its kinetic energy decreases and its potential energy increases. When the ball reaches maximum height, its kinetic energy is at a minimum.

Explanation:

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In a closed primary, only voters registered with a given party can vote in that party's primary.

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A rocket is fired in deep space, where gravity is negligible. If the rocket has a mass of 6000 kg and ejects gas at a relative v
shutvik [7]

25 miles per second worth of gas

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calculate the displacement and velocity of a ball 0.50 seconds after it is thrown straight up with an initial velocity of 15.0 m
iren [92.7K]

Answer:

The ball will have a displacement of 0.5*15.0=7.5m after 0.5 seconds. The velocity of the ball will be 15.0 m/s, since it is not acted on by any forces except gravity (which acts in the direction opposite of the velocity).

Explanation:

We know this is the answer because, according to the kinematic equation:

v^2=u^2+2*a*d

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3 0
2 years ago
1. Describe the differences in the ways the sand castle is changed by an ocean wave and by Dylan stomping on it
Snezhnost [94]

A sand castle that was changed by the ocean waves would be slowly taken away from by the waves and would just become a smooth mound of sand. If Dylan stomped on it then it would still have all of the same sand as before but in a different shape. It would also become a mound of sand but it would have all the same sand as before.


(I don't know if I was supposed to talk about fancy physics stuff so I just gave a basic explanation. I don't know if my answer is really right or not... hope it helped though :))

6 0
3 years ago
2. Două surse coerente oscileaza cu frecventa de 1 Hz, iar undele generate de elel se propaga pe suprafața apei cu viteza de 1,
hammer [34]

Answer:

the correct answer is B

Explanation:

Attenuation We can define the attenuation of a wave as the decrease in its intensity as it moves away from the focus. It is exclusively due to the distribution of its energy over a growing surface. This happens in the aqueous environment or in the water when a wave dissipates.

3 0
3 years ago
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