A skier squats low and races down an 11 degree ski slope during a 2s interval the skier accelerates 1.2m per sec squared what is the horizontal component of the skier's acceleration?

It doesn't matter how long she maintains her acceleration.

As long as she continues to accelerate at 1.2 m/s2 parallel to the slope,

the vertical component of her acceleration is

1.2 sin(11°) = 0.229 m/s2 (rounded)

and the horizontal component is

1.2 cos(11°) = 1.178 m/s2(rounded)