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Gnesinka [82]
3 years ago
11

Materials are called if they can catch on fire when they are exposed to a flame or hot temperature.

Physics
2 answers:
Nady [450]3 years ago
7 0

Answer:

A material that is able to catch on fire is called a combustible material. It 8s easily able to catch on fire with any flames near by or by the surrounding temperatures

denis-greek [22]3 years ago
4 0

They are called flammable.

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Irina-Kira [14]

The force of friction is 300 N

Explanation:

We can solve the problem by applying Newton's second law of motion: in fact, the net force acting on an object is equal to the product between the mass of the object and its acceleration. So we can write

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where

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For the cart in this problem, we have two forces acting on it:

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So Newton's second law can be rewritten as

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where

m = 50 kg

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And solving for F_f, we find the force of friction:

F_f = F-ma=500-(50)(4)=300 N

Learn more about force of friction:

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