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camimilligan114
27.12.2021 •
Mathematics
When a stone is dropped from a height, the time taken to fall, t, is proportional to the square root of the distance fallen, d. Write down a formula, using k, connecting the time taken to fall and the distance traveled.
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Ответ:
Step-by-step explanation:
We know that in kinematics we can write the formula for uniformly accelerated bodies:
s = 1/2 a t^2 + v0 t + s0
In our case s0 (initial deployment) = 0m and v0 (initial velocity) = 0
So:
s = 1/2 a t^2
Now we isolate t:
t =![\sqrt[2]{\frac{2s}{a} }](/tpl/images/2606/3501/fdcd8.png)
All proportionalities are obvious.
Note: I forgot to say that a, the acceleration, is the gravitational acceleration. It can be g or -g depending on how you'll choose the reference system.
Ответ:
you can also do 12+(-3) for the same answer
the way to find the diffetence is 12+(-3)
a way to find an equation equivlent to 12+(3)