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3 years ago

Which is a vector quantity? speed time acceleration distance

Physics

1 answer:

lesya692 [45]3 years ago

5 0

Answer:

the quantity which has both magnitude and direction is called vector quantity

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3 years ago

Which of the following equals the change in velocity divided by the time?

Usimov [2.4K]

Answer:

speed

Explanation:

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The mass of an atom of carbon-12 (Z = 6) is less than the mass of 6 protons and 6 neutrons because of

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3 years ago

You are watching an archery tournament when you start wondering how fast an arrow is shot from the bow. Remembering your physics

lianna [129]

<h2>Answer:</h2>

<em><u>Velocity of throwing arrow = 43.13 m/s.</u></em>

<h2>Explanation:</h2>

In the question,

Let us say the height from which the arrow was shot = h

Distance traveled by the arrow in horizontal = 61 m

Angle made by the arrow with the ground = 2°

So,

From the <u>equations of the motion</u>,

$61 =u.t\\t=\frac{61}{u}$

Now,

Also,

Finally, the angle made is 2 degrees with the horizontal.

So,

Final horizontal velocity = v.cos20°

Final vertical velocity = v.sin20°

Now,

u = v.cos20° (No acceleration in horizontal)

Also,

$v=u+at\\vsin20=0+9.8(t)\\t=\frac{v.sin20}{9.8}$

So,

We can say that,

$\frac{v.sin20}{9.8}=\frac{61}{v.cos20}\\v^{2}.sin20.cos20=597.8\\v^{2}=1860.56\\v=43.13\,m/s$

<em><u>Therefore, the velocity with which the arrow was shot by the archer is 43.13 m/s.</u></em>

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3 years ago

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Explanation: hope this helped plz mark brainest

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