Assume the ramp is frictionless

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Q. A 43 kg skier starts from rest at a height of H = 29 m above the end of the ski-jump ramp. As the skier leaves the ramp, his velocity makes an angle of 28° with the horizontal. Neglect the effects of air resistance and assume the ramp is frictionless.

Q. A mechanic pushes a 2.20 x10^3 kg car from rest to a speed of v, doing 5400 J of work in the process. During this time, the car moves 28.0 m. Neglecting friction between car and road, find each of the following.

1) the speed v 2)the horizontal force exerted on the car

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