Hi

I have a moving Ball

- The Ball moves at speedV

- The Ball has an InitialSpeedV_i

- The Ball has a TargetSpeedV_t

Every second:

- Ball is displaced V number of pixels

- V is multiplied by deaccelerationD( D is a number between 0 - 1 )

...

I need an expression, returning how many seconds it takes before V reaches TargetSpeed V_t ( V_t is allways lower or equal to V_i )

( Time is integer only )

...

Im quite rusty when it comes to math, but i think i know where to start with this:

V_i * ( D )^x <= V_t

Now i need to isolate the X?

However im not sure how to do that, or if this is what i need to do at all.

Pleace correct me if im wrong.