Breaking down long jump
Projectile Motion
Forces
Newton's 1st law states that an object at rest or constant velocity will remain at rest or constant velocity unless a force is acted upon it. This rule applies to my long jump becuase my body's horizontal velocity will remain constant during my entire jump while I am in the air. Sine the jump was recorded in an indoor track, there was minimal air resistance therefore there was no force acting upon it that could have changed the horizontal velocity.
Newton's 1st law states that an object at rest or constant velocity will remain at rest or constant velocity unless a force is acted upon it. This rule applies to my long jump becuase my body's horizontal velocity will remain constant during my entire jump while I am in the air. Sine the jump was recorded in an indoor track, there was minimal air resistance therefore there was no force acting upon it that could have changed the horizontal velocity.
One of the ways I can improve my jump is by applying a greater force on the board where I jump from to increase my horizantal velocity. If I could insrease my velocity by just 0.20s, I could increase the distance of my jump by 26cm, This is a huge distance in long jump and can move me from spmewhere like 16th to the top 3.
Work is being done during the jump by the board when it applies a force to my foor, propelling me forward. The force by the board occurs becuase according to Newton's 3rd law, each action has a reaction force that is equal in magnitude and opposite in direction. The initial force is done by my foot pushing downward on the board I jump from. The board then applies that same force back at me, sending me into the air into my jump.
Energy Conservation
Conservation of energy refers to the idea that the total amount of energy an object has is conserved during the process when energy is transofrmed from one form to another. Hypothetically, if there was no energy loss in my jump, the equation would look like this:
But, since energy was lost due to thermal and sound energy, the jumps efficiency was not 100%.
Energy loss can be due to many factors but the two I decided to focus in on are thermal energy and sound energy. Thermal energy is heat transmitted between two substances which would be between my body and the sand when I land or between my feet and board where I take off. Becuase thermal energy is not contributing to my jump in any way it is considered "energy loss". Sound energy is the noise you hear when two objects hit each other which in the case of long jump yould be when my foot contacting the board when I take off or the sound of me landing in the sand. They are both forms of energy loss, becuase they do not benefit you in the task you are trying to accomplish.
Energy Transformation Diagram