Your friend Dima, who is in a ski resort, competes with his brother on who can g

Question

Your friend Dima, who is in a ski resort, competes with his brother on who can glide higher with the snowboard. Dima, who's mass is 65kg, puts his 15kg snowboard on a level section of the track, 5m from the slope (inclined plane). Then, he takes a running start and jumps onto the stationary snowboard with a velocity of 5.78m/s (which makes an angle of 30º with respect to the horizontal direction.) Assuming that there is no friction or air resistance, what is the maximum height h that Dima and his snowboard can reach?

Explanation / Answer

65(5.78cos30)=80vf v=4.067 1/2 mv^2=mgh h=0.84m

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