1. The following is one frame of data collected during a biomechanical gait analysis. You must show all your math work to receive credit.

Knee (1. 32, 0.52) GRF X = -78.5N GRF Y = 581.7N GRF coordinates (1.52, 0.00) Foot COM coordinates (1.4, 0.06) Ankle coordinates (1.30, 0.09) Subject mass = 56.7 kg Foot length = 0.25 m (1.30, 0.09) Ankle 14.51 rad/s2 -5.57 m/s2 Toe -0.98 m/s2 GRF X and Y (red vectors)