A 64.0 kg skier approaches the foot of a hill with a speed of 14.0 m/s. The surface of this hill slopes up at 50^o above the horizontal and has coefficients of static and kinetic friction of 0.750 and 0.250, respectively, with the skis. A) Use energy conservation to find the maximum height above the foot of the hill that the skier will reach.
B) Will the skier remain at rest once she stops, or will she begin to slide down the hill?

Abasketball star covers 2.65 m horizontally in a jump to dunk the ball. his motion through space can be modeled precisely as that of a particle at his center of mass. his center of mass is at elevation 1.02 m when he leaves the floor. it reaches a maximum height of 1.90 m above the floor and is at elevation 0.910 m when he touches down again. (a) determine his time of flight (his "hang time"). (b) determine his horizontal velocity at the instant of takeoff. (c) determine his vertical velocity at the instant of takeoff. (d) determine his takeoff angle. (e) for comparison, determine the hang time of a whitetail deer making a jump with center-of-mass elevations yi = 1.20 m, ymax = 2.45 m, and yf = 0.750 m.