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ad-work [718]
4 years ago
11

How is constant velocity indicated on a motion map

Physics
2 answers:
ANTONII [103]4 years ago
6 0

Constant velocity refers to constant rate of change in position with time

which means equal change in position of object in equal interval of time

so it we are plotting a motion diagram where we will represent a position - time graph then

the motion plot must be a straight line with a constant slope

here we know that

v = \frac{dx}{dt}

so velocity is slope of the position time graph which remains constant

Similarly if the graph is plot against velocity and time then we will again represent it with straight line but this time the straight line must be of zero slope because here velocity is not changing with time.

nevsk [136]4 years ago
3 0
By velocity vectors (arrow)
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3 years ago
If the ac peak voltage across a 100-ohm resistor is 120 V, then the average power dissipated by the resistor is ________
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Answer:

The average power dissipated is 72 W.

Explanation:

Given;

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P_{avg} = \frac{1}{2} I_oV_o= I_{rms}V_{rms} = \frac{V_{rms}^2}{R}

where;

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V_{rms} = \frac{V_o}{\sqrt{2}} \\\\V_{rms} = \frac{120}{\sqrt{2}}\\\\V_{rms} = 84.853 \ V

The average power dissipated by the resistor is calculated as;

P_{avg} = \frac{V_{rms}^2}{R}\\\\P_{avg} = \frac{84.853^2}{100}\\\\P_{avg} = 72 \ W

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3 years ago
According to Newton’s First Law of Motion, what will happen to a baseball thrown in outer space
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4 years ago
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A rocket blasts off vertically from rest on the launch pad with an upward acceleration of 2.90 m/s2 . At 20.0s after blastoff, t
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D) The acceleration points downward

E) The time the rocket takes to return to the ground is given by:

t=\sqrt{\frac{2y}{g}}=\sqrt{\frac{2(580m)}{9.8m/s^2}}=10.87s

10.87 seconds

F) The velocity just before the rocket arrives to the ground is:

v=\sqrt{2gy}=\sqrt{2(9.8m/s ^2)(580m)}=106.62\frac{m}{s}

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