paratrooper is initially falling downward at a speed of27.0m/s before her parachute opens.When it opens, she experiences an upward instantaneous...

paratrooper is initially falling downward at a speed of27.0m/s before her parachute opens.When it opens, she experiences an upward instantaneous acceleration of70m/s2.(a) If this acceleration remained constant, how much time would be required toreduce the paratrooper's speed to a safe5.45m/s? (Actually the acceleration is notconstant in this case, but the equations of constant acceleration provide an easyestimate.).31s(b) How far does the paratrooper fall during this time interval?5.0m

how do i get the answer for b?