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3 years ago

A car travels with an average speed of 22 m/s.what is this speed in km/s

Physics

2 answers:

Debora [2.8K]3 years ago

4 0

It is .022 kilometers.

maksim [4K]3 years ago

4 0

Answer:

22 m/s = 79.2 km/h

Explanation:

Given that,

The average speed of the car is 22 m/s. Here, we need to convert the speed to km/h. Firstly, we will see the following conversions as :

1 kilometres = 1000 meters

1 hour = 3600 seconds

To convert m/s to km/h we must use these coversions.

$22\dfrac{m}{s}=22\times \dfrac{1/1000\ km}{1/3600\ s}$

After solving the above expression, we get

22 m/s = 79.2 km/h

So, the car travel with a speed of 79.2 km/h. Hence, this is the required solution.

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3 years ago

A 0.20-kg object is attached to the end of an ideal horizontal spring that has a spring constant of 120 N/m. The simple harmonic

Umnica [9.8K]

Answer:

A = 6.9 cm

Explanation:

Simple Harmonic Motion

A mass-spring system is a common example of a simple harmonic motion device since it keeps oscillating when the spring is stretched back and forth.

If a mass m is attached to a spring of constant k and they are set to oscillate, the angular frequency of the motion is

$\displaystyle w=\sqrt{\frac{k}{m}}$

The equation for the motion of the object is written as a sinusoid:

$\displaystyle X=A\ cos\ w\ t$

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$\displaystyle X'=V=-A\ w\ sin\ w\ t$

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$\displaystyle V_{max}= A\ w$

Solving for the amplitude

$\displaystyle A= \frac{V_{max}}{w}$

Computing w

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Calculating A

$\displaystyle A=\frac{1.7}{24.5}=0.069\ m$

$\displaystyle \boxed{A=6.9\ cm}$

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3 years ago

What is the slope of the line?

coldgirl [10]

(30, 5)
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3 years ago

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