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A 59 kg skier starts from rest at height H = 25 m above the end of a ski-jump ramp (see the figure). As the skier leaves the ramp, his velocity makes an angle of θ = 20° with the horizontal. ?

Neglect the effects of air resistance and assume the ramp is frictionless. (a) What is the maximum height h of his jump above the end of the ramp? (b) If he increased his weight by putting on a 10 kg backpack, what would h be?enter image source here

1 Answer
Nov 21, 2015





There will be no effect.


To find his velocity at the end of the ramp we can use the conservation of energy:

Potential energy = kinetic energy




Now we can get #h# by considering the vertical component of his velocity:





You can see that #m# does not feature in any of this so carrying a backpack will have no effect. Think of Galileo's famous experiment.