Vertical and Horizontal Forces

Question 1

What are the two vertical forces and how would you draw them on a person

Answer 1

1. Weight-downwards from the centre of mass

2.Ground reaction force-upwards from the points of contact

Question 2

What are the two horizontal forces and how would you draw them on a person

Answer 2

1.Air resistance-opposite the direction of motion from the centre of mass

2. Friction-in the direction of motion from the points of contact