3 years ago

Exercise and health

Physics

1 answer:

zavuch27 [327]3 years ago

4 0

Are both intertwined. exercise and you will feel brand new!!!

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A speed-time graph is shown below:

VladimirAG [237]

Answer: $0.5 m/s^{2}$

Explanation:

Average acceleration $a_{ave}$ is the variation of velocity $\Delta V$ over a specified period of time $\Delta t$ :

$a_{ave}=\frac{\Delta V}{\Delta t}}$

Where:

$\Delta V=V_{f}-V_{o}$ being $V_{o}=0 cm/s$ the initial velocity and $V_{f}=4 cm/s$ the final velocity (according to the information given from the described graph)

$\Delta t=8 s$

Then:

$a_{ave}=\frac{4 cm/s -0 cm/s}{8 s}}$

$a_{ave}=0.5 m/s^{2}$

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3 years ago

Will the velocity of the book change as it moves across the surface with NO friction? Explain your answer.

MakcuM [25]

No velocity will not be changed

Why?

According to Newtons 1st law the velocity of a moving object remains unchanged unless a external force affect that.

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A 25 N force stretches a spring 280 cm. What was the spring constant?

boyakko [2]

Answer:

F= 25N
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K=?
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= 0,089N/cm

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Increased force will increase acceleration true or false.

zalisa [80]

True. Force is acceleration therefor inverse force is increasing acceleration

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Hartman value profile

Grace [21]

What is your question exactly? I'm confused?

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