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Lostsunrise [7]
3 years ago
10

Which statement supports Newton’s first law of motion?

Physics
2 answers:
Ipatiy [6.2K]3 years ago
6 0

Answer:  The statement that supports Newton's first law of motion is the one that says that planets can move at a varying speed due to forces exerted in space

ElenaW [278]3 years ago
6 0

Answer:

Newton's first law of motion is that <em>an object at rest will stay at rest, unless acted upon by an external force.</em>

--------------------------------------------------------------------------------------------------------------

The "external force" can be anything, from a gust of wind, to a person moving the object. His first law also corresponds with the definition of inertia.

<em>Hope this helps!</em>

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On a highway curve with a radius of 46 meters, the maximum force of static friction that can act on a 1,200 kg car going around
Mekhanik [1.2K]

Answer:

v\approx 16.956\,\frac{m}{s}

Explanation:

The motion of the vehicule on a highway curve can be modelled by the following equation of equilibrium:

\Sigma F = f = m\cdot \frac{v^{2}}{R}

The maximum speed is:

v = \sqrt{\frac{f\cdot R}{m} }

v = \sqrt{\frac{(7500\,N)\cdot (46\,m)}{1200\,kg} }

v\approx 16.956\,\frac{m}{s}

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Do you think a moving skateboard has energy? Why or Why not? What about a skateboard that is not moving?
puteri [66]

Answer:

Yes

Explanation:

Because if you push it, the skateboard has kinetic/potential energy.

3 0
3 years ago
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A 500 kg motorcycle accelerates at a rate of 2 m/s .how much force was applied to the motorcycle?
Aleksandr [31]

Answer:

by using formula F=ma which is m stand for mass a stand for acceleration. so 500kg × 2 ms^-2

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3 years ago
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Calculate the change in length of a Pyrex glass dish (Coefficient of linear expansion for Pyrex is 3 * 10-6 / oC) that is 0.25 m
DIA [1.3K]

9*10^{-5} m

Explanation:

Step 1:

We are given the initial length of the Pyrex glass dish at a particular temperature and need to calculate the change in the length when the temperature changes by 120° C. The coefficient of linear expansion of Pyrex is provided.

Step 2:

Change in length = Coefficient of linear expansion * Change in temperature * Initial length

Step 3:

Coefficient of linear expansion = 3*10^{-6} /°C

Change in temperature = 120°C = 120 K

Initial length = 0.25 m

Step 4:

Change in length = 3*10^{-6} * 120 * 0.25 = 9*10^{-5} m

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kari74 [83]

Answer:

21 miles

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3 miles an hour for 7 hours

Its simply 7m*3m/hr=21 miles

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