Newton's First Law of Motion:
An object continues in its state of rest or uniform motion unless compelled to change that state by an external force
Air Resistance affects the bungee jumper slightly during the fall. This air resistance is the external force that Newton speaks of in his first law. While the bungee jumper falls, air resistance acts opposite to the relative motion, in this case the motion acting downwards. Without air resistance, or drag, the bungee jumper would continue to fall forever. The bungee cord itself could also act as the outside force which causes the object to change state. The jumper would continue to fall forever if the bungee was not there to resist the motion going downward. The ground will eventually serve as this external force to eventually stop the bungee jumper as well.
Newton's first law is related to the property of inertia. Inertia is the tendency for an object in motion to stay in motion, or an object at rest to stay at rest. When a bungee jumper is falling, the property of inertia explains how they want to keep falling. The object in movement, the bungee jumper, wants to stay in motion, as we know because if there was not an external force, such as the bungee or the ground, the bungee jumper would continue to fall. It is the bungee itself that acts as this unbalanced force to resist inertia, the property that causes the bungee jumper to want to continue to fall. Newton's first law explains why bungee jumpers with different masses must have different bungee ropes. Objects with a greater mass have a greater tendency to resist motion, therefore must have a bungee that is stronger, or that can give a greater resisting force so that the object in motion will not continue to fall.
NET FORCE= F(normal)-F(earth)=0
This force diagram serves as an example of what forces are acting on the bungee jumper right before he/she is about to jump. The force of the earth, and the normal force exerted by the ground in which they are standing on, are in equilibrium. This relates to Newton's First Law of Motion because the bungee jumper is not in motion, and will continue to stay at rest unless acted on by an uneven force, which will eventually be them jumping.
This force diagram serves as an example of what forces are acting on the bungee jumper right before he/she is about to jump. The force of the earth, and the normal force exerted by the ground in which they are standing on, are in equilibrium. This relates to Newton's First Law of Motion because the bungee jumper is not in motion, and will continue to stay at rest unless acted on by an uneven force, which will eventually be them jumping.