Acceleration: 
Step-by-step explanation:
For an object in uniformly accelerated motion, we can use the so-called SUVAT equations.
One of them is:

where
s is the displacement
v is the final velocity
t is the time
a is the acceleration
Here we want to re-arrange the equation to find the acceleration. We start by adding
on both sides of the equation:

Now we change sign on both sides:

And finally we multiply by 2 and divide by
on both sides, so we get:

Learn more about accelerated motion:
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