NEED HELP! with physics homework! I cant think straight to much stress PLEASE HELP :-)?

Question

how much work is done by a person who picks up a 3-kg crate from the floor, raises it 2 m, and sends it flying with a speed of 4 m/s? and how?

Answer 1

In the lifting part: 3kg*9.8m/sec^2*2M=6 joules
In the throwing portion: Work = .5*m*v^2=.5*16*3=24 joules
Therefore, a total of 30 joules worth of work is done for these combined acts.

Answer 2

The work done lifting it is f*d = w*d = m*g*d. (Hint: a Newton-meter is a joule.)
Giving it speed of V gives it kinetic energy = (1/2)*m*v^2. (This will also be joules)