Winston is a skateboarder who recently started to feel a sharp pain in his left knee. one of his favorite moves he is trying to perfect is to roll up a ramp, lose contact with his board while flying in the air, and then land on his board when he hits the ground. his body mechanics may be contributing to the knee pain because winston: has a wide stance with his knees parallel to balance the board at takeoff has his weight distributed evenly when landing on the board is keeping a low center of gravity by bending both knees when approaching the ramp is landing on the board with a straight left knee and slightly bent right knee