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JulsSmile [24]
3 years ago
14

Why is it more helpful to know a tornadoes velocity rather than its speed

Physics
2 answers:
max2010maxim [7]3 years ago
6 0
So you know where the tornado is going
victus00 [196]3 years ago
5 0
So you not only know<span> how fast it is going, but where it is going.</span>
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Physical science is
zimovet [89]

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E. The study of matter and energy, and the relationship between matter and energy

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5 0
3 years ago
Sound travels at a speed of 330 m/s. If a lightning bolt strikes the ground 3 km away from you, how long will it take for the so
mestny [16]

Answer: 9.09 seconds

Explanation:

Given that,

speed of sound = 330 m/s

Distance away = 3 km

(since the SI unit of distance is metres, convert 3km to metres

1km = 1000 metres

3km = (3 x 10000) = 3000 metres

Time it take for the sound to reach you = ?

Now, recall that speed is obtained by dividing distance travelled by the time taken.

i.e speed = distance / time

330 m/s = 3000 m / time

Time = 3000 m / 330 m/s

Time = 9.09 seconds

Thus, it will take 9.09 seconds for the sound to reach you.

3 0
3 years ago
How do I prove that a = v * dv/dx?
MaRussiya [10]
Your book has applied the chain rule to produce:
dv/dt = dv/dx * dx/dt
Now, we can get dv/dx by:
1) Differentiate
x = vt, with respect to v.
dx/dv = t
Now, if we take the inverse of this, we can obtain dv/dx
dv/dx = 1/t
This is also proven by the fact that dv/dx is the change in velocity and if you multiply it by dv/dx, which is equivalent to dividing by the change in time, as we just proved, then you obtain acceleration.
6 0
3 years ago
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