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Evgen [1.6K]
3 years ago
6

A force of 16 N is applied to a 2 kg mass over 4 m. The surface is horizontal and frictionless. If the object is initially at re

st;
(a) Find the work done.


(b) Find the change in kinetic energy.



(c) Calculate the final speed.
Physics
1 answer:
KATRIN_1 [288]3 years ago
6 0
C) Calculate the final speed.
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What is the mass of an object which has a force of 600 N acting on it and is travelling
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Answer:

<em>The mass of the object is 40 Kg</em>

Explanation:

<u>Net Force</u>

According to the second Newton's law, the net force exerted by an external agent on an object is:

F = m.a

Where:

a = acceleration of the object.

m = mass of the object.

The mass can be calculated by solving for m:

\displaystyle m=\frac{F}{a}

The object has a net force of F=600 N acting on it and travels at a=15\ m/s^2, thus the mas is:

\displaystyle m=\frac{600}{15}

m = 40 Kg

The mass of the object is 40 Kg

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What is the voltage of a motor that draws a current of 2 a and produces 240 w of power?
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Here Power = Voltage * Current

So, Voltage = Power/Current

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V = 120 V

In short, Your Final Answer would be: 120 Volts

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