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ycow [4]
3 years ago
10

Ann walked 1.5 miles south to her house in 0.5 hours. what is Ann's speed? what is Ann's velocity

Physics
1 answer:
ipn [44]3 years ago
7 0

To calculate the speed and velocity of the Ann`s we use the formula,

v= \frac{d}{t}

Here, d is distance and t is time and v if we take it with direction then it is called velocity and if we take it without the direction then it is called speed.

Given d=1.5 miles and t=0.5 hours.

Substituting these values in above equation we get

v=\frac{1.5mi }{0.5 h} = 3 mi/h

As Ann walked towards south direction therefore, Ann`s velocity is 3 mi/h south and her speed is 3 mi/h .

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Answer:

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3 years ago
Explain Energy Transformation using the image below and how the Law of Conservation of Energy is maintained.
Karolina [17]

The chemical energy of petrol is converted to heat energy on combustion. The heat energy is converted to kinetic energy by the use of internal combustion engines in vehicles. The law of conservation of energy is maintained in each process.

<h3>What is kinetic energy?</h3>

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K.E = 1/2 mv²

Given is a diagram of energy conversion due to combustion.

The chemical energy of petrol is converted to heat energy on combustion. The heat energy is converted to kinetic energy by the use of internal combustion engines in vehicles.

The law of conservation of energy states that the energy can neither be created nor destroyed. It can be only converted to one form to the other.

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Hence, the law of conservation of energy is maintained in each process

Learn more about kinetic energy.

brainly.com/question/12669551

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8 0
2 years ago
After scientists analyze the results of their experiments they
Oksi-84 [34.3K]
They communicate their result to the scientific community- so to speak
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3 years ago
Inside a television picture tube there is a build-up of electrons (charge of 1.602 × 10^–19 C) with an average spacing of 38.0 n
Brut [27]
The magnitude of electric field is produced by the electrons at a certain distance.

E = kQ/r²

where: 
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Given are the following:
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8 0
3 years ago
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