Answer:
Below
Step-by-step explanation:
Her POTENTIAL energy , mgh , is converted to KINETIC energy , 1/2 mv^2
mgh = 1/2 mv^2 You can divide through by 'm' to get:
gh = 1/2 v^2 solve for 'v'
v = sqrt (2gh)
= sqrt ( 2 * 9.81 * 25.8) = 22.5 m/s
( NOTE that her mass, 64.6 kg , is irrelevant)