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kkurt [141]
3 years ago
6

An object is moving in the absence of a net force. Which of the following best describes the object's motion? -please help?

Physics
2 answers:
Gelneren [198K]3 years ago
7 0
You can solve this by using Newton's First Law or Newton's Second Law.

1) Newton's First Law or Inertia Law states that in the abscense of a net force acting over an object, this will not chage its state of movement, i.e it will  remain at rest (if it is no moving) or with uniform movement (if the object is moving).

2) Newton's Second Law: Net force = mass * acceleration => acceleration = net force / mass = 0 / mass = 0.

Zero accelerations means rest or uniform movement.

First Law is implicit in Second Law.
anzhelika [568]3 years ago
7 0
There are two cases in which no net force is being applied on an object:
1) The object is stationary
2) The object is not accelerating; that is, the magnitude or direction of its velocity is not changing.
Because this question requires the object to be in motion, the velocity of this object must be constant but non-zero.
Therefore, the correct option would be the one where the velocity is constant and in a straight line. (circular motion means the velocity's direction is constantly changing, thus the velocity is not constant)
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Volgvan

Answer:

When primary coil is exited by sin wave,this will result in sin wave in secondary coil as well.According to law,flux induced in the secondary coil will have same waveform as in the primary coil.

5 0
3 years ago
Câu 1. Trường hợp nào dưới đây không phải là vật sáng?
Marianna [84]

Answer:

A

Explanation:

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5 0
2 years ago
a 15 kg tv sots on a shelf at a height of 0.3 m. how much gravitational potential energy is added to the television when it is l
nata0808 [166]
Gravitational potential energy can be described as m*g*h (mass times gravity times height).

Originally,
15kg * 9.8m/s^2 *0.3 m = 44.1 kg*m^2/s^2 = 44.1 Joules.

After it is moved to a 1m shelf:
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147 J - 44.1 J = 102.9 Joules.
6 0
3 years ago
In certain cases, using both the momentum principle and energy principle to analyze a system is useful, as they each can reveal
kramer

Explanation:

The gravitational force equation is the following:

F_G = G * \frac{m_1 m_2}{r^2} \\

Where:

G = Gravitational constant = 6.67408 * 10^{-11} m^3 kg^{-1} s^{-2}

m1 & m2 = the mass of two related objects

r = distance between the two related objects

The problem gives you everything you need to plug into the formula, except for the gravitational constant. Let me know if you need further clarification.

8 0
3 years ago
What is an example of a stable system
oksian1 [2.3K]
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1) functions of sine

2) DC

3) signum

4) unit step 

5) cosine.

Happy Studying! ^^


6 0
3 years ago
Read 2 more answers
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