The polar nuclei of the center cell
Answer:

Explanation:
As per the Newton's first law of motion,

where "v" is the final speed
"u" is the initial speed
"a" is the acceleration
and "t" is the time taken
Substituting the given values in above equation, we get -

The cart be traveling at a speed of
by the time it reaches level ground.
My(myo) may be is the right one