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Elanso [62]
3 years ago
11

Which phrase best describes a machine?

Physics
2 answers:
Nastasia [14]3 years ago
5 0

Answer:

All of the above.

Explanation:

All Machines make work easier.

They can move objects.

They have multiple parts.

And the use energy.

Nana76 [90]3 years ago
3 0

☁︎I would say any device that makes work easier☁︎

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The acceleration of the car is 0.8049m/s^{2}.It takes 13.802s to travel the 230 m.

<h3>What is acceleration?</h3>

In mechanics, acceleration refers to the rate at which an object's velocity with respect to time varies. Acceleration is a vector quantity (in that they have magnitude and direction). The direction of an object's acceleration is determined by the direction of the net force acting on it. Newton's Second Law states that the combined effect of two factors determines how much an item accelerates: 

(i) It follows that  the magnitude of the net balance of all external forces acting on the object is directly proportional to the magnitude of this net resulting force, and

(ii) the mass of the thing, depending on the materials out of which it is constructed, is inversely proportional to the mass of the thing.

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40 km/hr ----- 11.11m/s

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v^{2} -u^{2} =2as\\22.22^{2} - 11.11^{2} = 2 x a x 230\\ 370.296=460a\\ a= 0.8049m/s^{2} \\

Time taken

v-u=at

22.22-11.11= 0.8049 x t

t=13.802s

To learn more about acceleration ,visit:

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