Average Power and Work-Kinetic Energy Theorem problem

[Keldroc]

Homework Statement

To complete your master's degree in physics, your advisor has you design a small, linear accelerator capable of emitting protons, each with a kinetic energy of 8.2 keV. (The mass of a single proton is 1.67 x 10^-27 kg.) In addition, 1.00 x 10^9 protons per second must reach the target at the end of the 1.80-m-long accelerator.
(a) What the average power must be delivered to the stream of protons?
1. ? μW

(b) What force (assumed constant) must be applied to each proton?
2. ? N

(c) What speed does each proton attain just before it strikes the target, assuming the protons start from rest?
3. ? m/s

Homework Equations

[URL]http://upload.wikimedia.org/math/9/a/e/9aeac7ca01e03ffd4b80c513dbeb1b6a.png[/URL]Can someone help with this question? Thanks in advance

 

[Redbelly98]

You have the mass and the kinetic energy, and K=½mv². Find v to answer part (c).

From there you can find the protons' acceleration, which will help to
find the force in part (b).