The same image below shows the hip joint angle over the cour…

The same image below shows the hip joint angle over the course of the gait cycle. A) During which percentages of the gait cycle is hip angular acceleration positive? B) During which percentages of the gait cycle is hip angular acceleration negative? Your answers for A and B should be reported in intervals (e.g., 0-10%).

A golfball was driven straight horizontally from a point 3 m…

A golfball was driven straight horizontally from a point 3 meters above a level fairway. If the ball landed (and stopped immediately) on the fairway at a point 150 m horizontally from the starting point, what was the velocity of the ball immediately after it was hit?