At the base of a frictionless icy hill that rises at 25.0∘ above the horizontal, a toboggan has a speed of 11.9 m/s toward the hill. how high vertically above the base will it go before stopping?

17.10 m

Explanation:

When the toboggan stops, we have:

The x-component of weight is the product of the weight and the sine of the angle above the horizontal, so the y-component of W is the product of the weight and the cosine of the angle above the horizontal.

The work-energy principle states that the change in the kinetic energy of an object is equal to the net work done on the object.

Recall that , replacing (1):

.) the observation by semmelweis that more mothers died of childbed fever when their doctors also worked in the morgue

frequency or wavelenth of em radiation in a vacuum