Hey

I have a moving Ball

- The Ball has an InitialSpeedV_i

- The Ball has a TargetSpeedV_t

Every second:

- Ball is displacedV_inumber of pixels

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

...

I need an expression, returning how many seconds it takes before reaching TargetSpeedV_t( V_t is allways lower or equal toV_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.

EDIT:

Darn, i just noticed that this Sub Forum ( Math ) reads "No math help"

Maybe a Moderator could move this thread to an appropriate Sub Forum?