(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Santa has an unfortunate roof mishap. When he steps out of his sleigh, he realizes that there is a coating of ice on this particular roof—making it a completely frictionless surface. Starting with an initial velocity of zero, he slides down the roof (a distance of 2.50 m along the rooftop) before he becomes a projectile. He lands in a soft pile of snow that is 15.0 m lower than the edge of the roof. How far from the house is the pile of snow in which Santa lands (what is the range)? During his slide on the roof, his acceleration is 1.9 m/s2 and the angle that the roof top makes with the horizontal is 30.0°.

Vo = 0m/s

Vf = ?

a = 1.9 m/s2

2. Relevant equations

V=Vo + at

Δx=Vot + 1/2at^2

3. The attempt at a solution

My professor said that this was an energy conservation problem using kinematic equations, but I don't see that.

V=Vo+at

t = V-Vo/a (getting rid of the t variable)

Δx=Vo(V-Vo/a) + 1/2a(V-Vo/a)^2

Am I on the right track? Do I need to break these up into Y and X components?

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# Homework Help: Kinematic Energy Problem

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