Finding mass with acceleration and velocity

[PepeF.]

Homework Statement

the force of air resistance on a raindrop is 5.3x10-5N when it falls with a erminal velocity of 5.3 m/s.

the acceleration of gravity is 9.8 m/s2.

what is the MASS in Kg of the raindrop?


[i am completely lost in this one]

 

[Delphi51]

Write that the sum of the forces = ma.