A retarding force on a fallen object is given by:
F = 0.5* c * rho * A * v^2
Where A is the cross sectional area
c is a constant
rho is air density
v is teh verical velocity
Three objects initially at rest are dropped from height of 100m.
A baseball of mass 0.145 and radisu of 0.0366m
A ping-pong ball of mass 0.0024kg and radius 0.019m
A rain drop with radius of 0.003 m (and use standard water density)
The solution is 9 pages long and includes full derivations and all the steps to obtain the required results.