Distinguish between infrasonic and ultrasonic sound waves.
Technology of Alpine Skiing ME1520 Homework 2. pump and step Scenario for questions 1-4: On the flats (α=0) an 85kg skier is initially going 9m/s in a turn with a radius of 12m. Neglect air drag. Neglect ski-snow friction. The skier extends causing the center of mass to move towards the inside of the turn, and the radius of the turn is reduced to 11.5m (assume the edge and lean angles change appropriately). 1. What is the speed of the skier on the new radius 2. How much work was done to move to the new radius 3. What was the initial lateral force 4. What was the final lateral force Scenario for problems 5 and 6: The same skier is still on the flats and once again moving at 9m/s, but now along a straight line. The skier makes a lateral pu
