The document discusses the factors that affect projectile motion, including the force of projection, angle of release, and height of release. It describes experiments where students vary each of these factors and measure the resulting distance of a thrown tennis ball. The results show that increasing the force, releasing at an angle of 45 degrees, and releasing from a higher height all result in greater projectile distance due to giving the projectile a higher initial speed and extending its flight time under the influence of gravity.

1. Human Movement Biomechanics

19. 30cm 20cm 15cm 10cm 0cm Magnitude of spin (eg fast/slow, small/large) Direction of spin (eg clockwise) Distance from 15cm mark to edge of table

22. Little or no spin Little or no spin cm 30cm 20cm 15cm 10cm 0cm Magnitude of spin (eg fast/slow, small/large) Direction of spin (eg clockwise) Distance from 15cm mark to edge of table

37. Range of trajectories for various sporting activities