How do you find final velocity with initial velocity and energy gained?

[lanruoer]

Homework Statement

It gives the mass, energy gained (change in energy), initial velocity and power and time
I　need to find final velocity

Homework Equations

EK= 0.5mv^2

The Attempt at a Solution

I was thinking of plug in the number into above formula but if i do this i won't be using the initial velocity. Also I'm confused about change in energy and energy.. is there any difference?

 

[The legend]

You will need the initial velocity because you are given the "Change" in energy.

delta (KE) = 0.5*m*(vf - vi)^2Also the difference between energy and change in energy is simple that, energy is the total energy of a body at a given time. Change in energy is the difference of the total energy at two time instants.

Hope this helps!