Answer:
if we ignore air resistance .. which might slow her down a lot towards the end of the 7 seconds.. but we will just ignore that for this question
Explanation:
then V=Vo+a*t
Vo=0
V=a*t
V=9.8(7)
V=68.6 m/s just a little over 150 MPH.. but.. I think terminal velocity is close to 120... soo hmm maybe about that fast... but that with air resistance.. so this problem depends a lot on if you're going to ignore that
