For all you smarties, i need help with PHYSICS Options

[mmmchocolate]

Alright i SUCK at physics and need some help with a few problems concerning work-energy-momentum, im working through a worksheet and will be posting more problems as i get to them. but for now here is one i seem to be stuck on, don't make fun of my stupidness if this seems easy to some of you.
BTW my teacher write his own problems so thats why the questions are a little different

Jake "the Big-Man" Wickstrom rolls a double-wide old-school Toro Lawnmower across Mrs. Omalley's lawn with a force of 300N in the direction of the stainless steel handle, which forms an agle of 34.0 degrees with the ground (is at an angle of 34.0 degrees above the horizon).
A) If Jake produces 150Watts of power for 90.0 seconds, what distance is the mower pushed in meters and in feet?
B) How much horespower does Jake "the Big-Man" Wickstrom produce?

[Consynx]

NEW----
Katerina, a 60-kg dancer from Moscow, Russia, leaps 0.32 m high.
A. With what momentum does katerina reach the ground?
B. What impulse is needed to make Katerina stop?
C. As katerina lands, her knees bend 0.12 m, lengthening the time required to stop to 0.05s. Find the average force exerted on her body?

A)
Energy Balance ==> mgh = 1/2mv^2 ==> 60*9.81*0.32 *2 /60 = v^2 Solve for v, then multiple by m for a "momentum"...at least i'm assuming that's what your teacher wants. kg*m/s for a unit??? lol
B)
No Clue, It sounds like it needs a time value... the old F*t=mv type of equation...in which case this might be an attempt at a trick, and the answer is the same as A.
C)
same equation, or so i'd think. So F*0.05 = 60*(v from part A)

learn to do physics, especially if your major involves lots of math.