a body travels half of its total path in the last second of its free fall from rest.what is the duration of fall .

Answer 1

0.5d = Vo*t + 0.5gt^2,
0.5d = 0 + 0.5*9.8(1)^2,
0.5d = 4.9,
d = 9.8m.

d = Vo*t + 0.5gt^2 = 9.8m,
0 + 0.5*9.8t^2 = 9.8,
4.9t^2 = 9.8,
t^2 = 2,
t = 1.414s.

Answer 2

mistake)) it has initial velocity