<span>Basically just divide the change in position by the change in time. </span>
I would assume air resistance is negligible and so the acceleration of the package would be approximately 9.81 m/s².
Taking downwards as positive, use v²=u²+2as.
v²=(-2)²+2(9.81)(14)
v=16.7 m/s
F = ma
a = f/m
if f doubled , acc. will be doubled
