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Ahat [919]
3 years ago
10

Distinguish between velocity and acceleration

Physics
1 answer:
Elis [28]3 years ago
8 0

Acceleration is the rate at which velocity changes.

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Two bicycle tires are set rolling with the same initial speed of 4.0 m/s along a long, straight road, and the distance each trav
umka2103 [35]

Answer:

The coefficient of rolling friction will be "0.011".

Explanation:

The given values are:

Initial speed,

v_i = 4.0 \ m/s

then,

v_f=\frac{4.0}{2}

    =2.0 \ m/s

Distance,

s = 18.2 m

The acceleration of a bicycle will be:

⇒ a=\frac{v_f^2-v_i^2}{2s}

On substituting the given values, we get

⇒    =\frac{(2.0)^2-(4.0)^2}{2\times 18.2}

⇒    =\frac{4-8}{37}

⇒    =\frac{-4}{37}

⇒    =0.108 \ m/s^2

As we know,

⇒  f=ma

and,

⇒  \mu_rmg=ma

⇒       \mu_r=\frac{a}{g}

On substituting the values, we get

⇒       =\frac{0.108}{9.8}

⇒       =0.011

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3 years ago
Which explains how time of winds creates high waves?
lisabon 2012 [21]
C
The smaller waves created by the constant winds gradually add up to form larger ones.
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What is the answer to 7Hm a dm
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The measure of the force of gravity on an object, expressed as mass of the object times acceleration due to gravity is called
gulaghasi [49]

The measure of the force of gravity on an object, expressed as mass of the object times acceleration due to gravity is called

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4 0
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the smallest unit in physics is the Planet length.wr need to know constant (h) the speed of light (c) and Newton's Gravitational
fgiga [73]

Yes, that's right.  It's the 'Planck' length, not the 'Planet' length.

You could easily find these with a web search.  But in gratitude
for the bountiful 5 points, I've saved you the trouble. 
AND guess what !   By doing that, I learned something, and
you didn't.

Speed of light (c):                 299,792,458 meters per second

Gravitational constant (G):   6.67 x 10⁻¹¹  newton-meter²/kilogram²

Planck's Konstant (h):           6.63 x 10⁻³⁴ joule-second

Planck Length:                      1.6 x 10⁻³⁵ meter
                                            (about 10⁻²⁰ the size of a proton)

Planck Time:                          10⁻⁴³ second
                                             (about the time it takes to travel
                                              a Planck Length at the speed of light)  

4 0
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