A book slides off a table top with a speed of 11 meters per second . It strikes the floor in 0.66 seconds . How tall was the table ( in meters)?

Answer 1

h = Vo*t + 0.5g*t^2,
h = 0 + 4.9*(066)^2 = 2.13 m.

Answer 2

y-yo=yo*t+1/2(9.8)(O.66)2
=O + 4.9(O.66)2
=2.13m