The six situations in the figure show before and after "snapshots" of a ball's velocity, where the snapshots are taken 25-s apart. In case B, the final velocity is $v = +50 m/s$. Consider the positive direction to be to the right.
initial
final
A
$+10 m/s$
$+20 m/s$
D
$+20 m/s$
$+30 m/s$
initial
final
B
$+20 m/s$
v
C
$+10 m/s$
$-10 m/s$
E
$+30 m/s$
$+20 m/s$
F
$+30 m/s$
$-20 m/s$
Rank these situations from largest to smallest based on the magnitude of the average acceleration (i.e., do not consider the direction of the acceleration). Ties are possible. Use the symbols $>$ and $=$ to indicate your ranking, listing any that are equal in alphabetical order. For example, if Y and Z are the same and are both greater than X, then you would enter $Y=Z>X$ (note: $Z=Y>X$ would be incorrect, since Y and Z, being equal, must be in alphabetical order).
LARGEST ACCELERATION
SMALLEST ACCELERATION
What is the average acceleration (including its sign) for case B?
$m/s^2$