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## Homework Statement

**I did the first 3 parts of the question, but I can't seem to get the right answer on the last one.**

(a) How much work is done by the horizontal force Fp on the 20 kg block when the force pushes the block 3.6 m up the 30° frictionless incline?

467.7 J

(b) How much work is done by the gravitational force on the block during this displacement?

-352.8 J

(c) How much work is done by the normal force?

0 J

**(d) What is the speed of the block (assume that it is zero initially) after this displacement?**

## Homework Equations

F=ma

K=.5m(v^2)

## The Attempt at a Solution

I know that W = .5m(v^2) in this case, and since on D, (thats the one I have a question on), I'm trying to find Velocity, I can use this formula. I tried

467.7 = .5m(v^2)

and got v=6.83 but thats wrong.

**Thank you so much for your help!!**

=)