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Alex73 [517]
3 years ago
8

What is the average velocity of a car starting from 0 and travels 7 meters in 9 seconds?

Physics
1 answer:
Leni [432]3 years ago
5 0

Your question has been heard loud and clear.

Averge velocity formula=  Total distance travelled / total time taken.

Total distance=7meters

Total time taken=9 seconds.

Average velocity = 7/9= 0.77 metres/second

Average velocity= 0.77m/s

Thank you.

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chegg a projectile is shot directly away from earth's surface. neglect the rotation of the earth. what multiple of earth's radiu
Naya [18.7K]

The radial distance of the projectile reaches  reaches if its initial speed is 0.745 of the escape is (25/24) R.

Calculation:-

<em>The mass of the earth is M and </em><em>radius </em><em>of the earth is R.</em>

<em>The escape velocity ve = √(2GM/R)</em>

<em>Since the terminal veocity v0 = (1/5) ve  = (1/5) √(2GM/R)</em>

<em>(a) Let h be the height from the surface of the earth</em>

<em>From the law of </em><em>conservation </em><em>of </em><em>energy</em>

<em>(KE)1 = Change in </em><em>potential energy</em>

<em>(1/2) m (v0)2 = (GMm/R) - (GMm/(R+H)) </em>

<em>(1/2) m (1/25) (2GM/R) = (GMm/R) - (GMm/(R+H)) </em>

<em>(1/25R) = (1/R) - (1/(R+H))</em>

<em>1/25 = H / R+H</em>

<em>R+H = 25H</em>

<em>H = R/24</em>

<em>Now R+H = (25/24) R</em>

velocity can be the perception of the fee at which an object covers distance. A quick-transferring item has a excessive pace and covers a substantially large distance in a given amount of time, whilst a sluggish-transferring item covers a incredibly small quantity of distance in the identical quantity of time.

The primary unit or the S.I. unit of velocity is m/s or ms⁻¹.

Learn more about Speed here:-brainly.com/question/13943409

#SPJ4

6 0
1 year ago
A 4V source is connected across a 2μF capacitor. Find the charge on this capacitor.
Feliz [49]

Answer: 8 μc

have: 2μF = 2.10^{-6} F

the charge on this capacitor is 2.10^{-6}.4=8.10^{-6}(c)=8(μc)

Explanation:

6 0
3 years ago
The speed of sound in an ideal gas is given by the relationship v = γRTM−−−−√ , where R - the universal gas constant = 8.314 J/m
Anna71 [15]

Answer:

Explanation:

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2.) 4\pi r^2I=P\\\\\\P=4\pi(vt)^2I=4\pi (342.64\times3)^2(10^{-2})=1.33\times10^5watt

4 0
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During a medical condition screening lung capacity testing is a standard procedure. True of false
Nostrana [21]

During a medical screening, lung capacity testing is a standard procedure.


true

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Name on contact force and one field force acting on you right now
kati45 [8]

Answer:

Contact forces are forces that require the actual contact (touching) of two pieces of matter. There are a variety of contact forces. A very common one is friction. Anytime that two surfaces are in contact with one another, there is friction between the two surfaces. A field force is a force that works at a distance. No touching is required. Gravity is a good example of a field force, because it works whether or not an object is touching something or touching nothing at all.

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