Askier with a 65kg mass skies down a 30 degree incline hill. the coefficient of friction is 0.1. a. draw a free body diagram. b. determine the normal force. c. determine the acceleration of the skier down the hill.

Arunner is training for an upcoming marathon by running around a 100-m-diameter circular track at constant speed. let a coordinate system have its origin at the center of the circle with the x-axis pointing east and the y-axis north. the runner starts at (x, y) = (50 m, 0 m) and runs 2.5 times around the track in a clockwise direction.