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RUDIKE [14]
3 years ago
11

Why does an object in motion stay in motion unless acted on by an unbalanced force? A) because forces are what stop and start mo

tion B) because balanced forces can not exist in nature C) because motion is the inherent state of all matter Eliminate D) because motion, once begun, continues to accelerate
Physics
1 answer:
ruslelena [56]3 years ago
3 0
The answer is A you are welcome
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This version of Einstein’s equation is often used directly to find what value?
stepladder [879]

A. THE ENERGY THAT IS RELEASED IN A NUCLEAR REACTION.

M =MASS

C^2= SPEED OF LIGHT SQUARED

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Use newton's laws to find an expression for the net external force acting on the car. ignore air resistance.
alexira [117]
Hi, thank you for posting your question here at Brainly.

Newton's second law of motion can be expressed as Fnet = ma. The next external for acting on, say for example, a moving car are the following:

*weight due to gravity (force down)
*friction force between he road and the car's tires (force opposite the car's direction)

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How does a mathematical model help you understand the science concepts? Give an example.
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2 years ago
SCIENCE:
ololo11 [35]

Answer:

A satellite goes into orbit by getting a ride with a rocket or the Space Shuttle. Gravitational pull and the velocity of the satellite help it remain in orbit.

Explanation:

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3 years ago
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A runner taking part in the 200 m dash must run around the end of a track that has a circular arc with a radius of curvature of
nlexa [21]

Answer:

a_c=1.44\ m/s^2

Explanation:

<u>Centripetal Acceleration</u>

It's the acceleration that an object has when traveling on a circular path to take into consideration the constant change of velocity it must have in order to keep going in the circular path.

Being v the tangent speed, and r the radius of curvature of the circle, then the centripetal acceleration is given by

\displaystyle a_c=\frac{v^2}{r}

We can compute the value of v by using the distance and the time taken to travel:

\displaystyle v=\frac{x}{t}=\frac{200\ m}{26.4\ s}

v=7.58\ m/s

Now we calculate the centripetal acceleration

\displaystyle a_c=\frac{7.58^2}{40}=1.44\ m/s^2

\boxed{a_c=1.44\ m/s^2}

4 0
3 years ago
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