Answer:
David will not be able to catch the bill .
Explanation:
Reaction time = .2 s .
During this period bill will fall vertically between the fingers.
Distance of fall = 1/2 x g x t²
= .5 x 9.8 x 0.2²
= 19.6 cm or 20 cm .
Generally the bill has size of the order of 25 cm . From central point it requires a fall of 12.5 cm for the bill to escape the catch . Since fall is of 20 cm , that means bill will fall below the level of fingers in .2 s .
So David will not be able to catch the bill.
