To find the final velocity of an accelerating object, you need to know the initial velocity, the acceleration, and the time over which the acceleration occurs. You can use the following equation, known as the second equation of motion:
vf=vi+atv_f = v_i + atvf=vi+at
where: vfv_fvf is the final velocity, viv_ivi is the initial velocity, aaa is the acceleration, and ttt is the time.
By plugging in the known values, you can solve for the final velocity. It's important to note that this equation assumes constant acceleration during the entire time interval.
If you don't have the time duration but have other information such as displacement or other equations of motion, you may need to use alternative equations or additional information to determine the final velocity. The specific approach can depend on the problem and the given information.