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olya-2409 [2.1K]
3 years ago
15

Which term best describes how fast and in what direction an object is moving at a particular moment? Question 2 options: acceler

ation average velocity position instantaneous velocity
Physics
1 answer:
kompoz [17]3 years ago
7 0

Answer:

Instantaneous velocity

Explanation:

Acceleration = rate of change of velocity

Average velocity = total displacement divided by total time taken

Position = It shows the location of the object

Instantaneous velocity = It is the velocity of an object at a particular instant.

The term that describes how fast and in what direction an object is moving at a particular moment is "instantaneous velocity". It is basically equal to the derivative of position wrt time.

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Pressure- Pascal(N/m^2)

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How much metabolic energy is required for a 68kg person to run at a speed of 15km/hr for 15min ?
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<span>What I have here is exactly the same problem, however, with the time changed to 19 mins:

metabolic energy = metabolic power*time = 1.150*19*60 = 1.311 kJ..corresponding to 1.311/4.186 = 313,2 Cal or kcal 

If we reasonably assume a metabolic eff.cy of 20%, it means we need to assume food for 1500 Cal approx.

Just plug the value t=15min to the equation and you will surely get the correct answer.

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