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Thepotemich [5.8K]
3 years ago
13

If a racecar traveling at 6 m/s accelerates at 0.75 m/s over 30 seconds, what is its

Physics
1 answer:
Elina [12.6K]3 years ago
8 0

Answer:

The importance of learning is that it helps the individual to acquire the necessary skills through learning and knowledge so that he can achieve his set goals. An important fact about learning is that it is a means to improve knowledge and gain skills that will help in reaching specific goals.

Explanation:

The importance of learning is that it helps the individual to acquire the necessary skills through learning and knowledge so that he can achieve his set goals. An important fact about learning is that it is a means to improve knowledge and gain skills that will help in reaching specific goals.

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Cara is building a model of the solar system, which includes the Sun. She plans to include a written description to provide deta
Paladinen [302]

Answer:

She should explain that the Sun is made up of gaseous layers that surround an iron core.

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3 years ago
What is true of all particles of gas enclosed within a container?
Andre45 [30]
Theyre all in constant motion

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3 years ago
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Importance of a cell​
Anika [276]

Explanation:

Cells are the basic building blocks of all living things. The human body is composed of trillions of cells. They provide structure for the body, take in nutrients from food, convert those nutrients into energy, and carry out specialized functions.

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2 years ago
How fast must an object move before its length appears to be contracted to one-fourth its proper length? (Give your answer in te
Tresset [83]

Answer:

<em>0.97c</em>

<em></em>

Explanation:

From the relativistic equation for length contraction, we have

l = l_{0}\sqrt{1 - \beta }

where

l is the final length of the object

l_{0} is the original length of the object before contraction

β = v^{2} /c^2

where v is the speed of the object

c is the speed of light in free space = 3 x 10^8 m/s

The equation can be re-written as

l/l_{0} = \sqrt{1 - \beta }

For the length to contract to one-fourth of the proper length, then

l/l_{0} = 1/4

substituting into the equation, we'll have

1/4 = \sqrt{1 - \beta }

substituting for β, we'll have

1/4 = \sqrt{1 - v^2/c^2 }

squaring both side of the equation, we'll have

1/16 = 1 - v^2/c^2

v^2/c^2 = 1 - 1/16

v^2/c^2 = 15/16

square root both sides of the equation, we have

v/c = 0.968

v = <em>0.97c</em>

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3 years ago
which of the following is true? a)speed is velocity w a vector b)speed is a scalar w direction c)speed is velocity w direction d
Aleksandr [31]

The answer is D velocity is speed w a direction

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