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lawyer [7]
3 years ago
12

After how many seconds does the motorcycle have positive acceleratolion​

Physics
1 answer:
densk [106]3 years ago
3 0
After 4 seconds it has positive acceleration
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A 25 N force is used to push a box across a floor against a frictional force of 14 N. The box
Svetlanka [38]

Answer:

m = 44~Kg

Explanation:

<u>Net Force</u>

Newton's second law explains the dynamics principles when a number of forces are applied to an object.

The net force vector is the sum of the individual vector forces applied. The magnitude of the net force is related to the magnitude of the acceleration of the body as follows:

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Furthermore, the acceleration can be calculated if we know the kinematic behavior of the body:

\displaystyle a=\frac{v_f-v_o}{t}

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Fn=m.a

We solve for m:

\displaystyle m=\frac{Fn}{a}=\frac{11~N}{0.25~m/s^2}

\mathbf{m = 44~Kg}

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