SC PHYS 201 - Projectile Motion (4 pages)

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Projectile Motion

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Projectile Motion


Lecture number:
Lecture Note
University Of South Carolina-Columbia
Phys 201 - General Physics I

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Phys 201 1nd Edition Lecture 5 Outline of Last Lecture I Solving for vectors and separating x and y equation components Outline of Current Lecture II General Projectile Motion Equations III Solving Projectile Motion when Y 0 A Range Equation IV Solving Projectile Motion Without Y Displacement V Solving Using Vectors Current Lecture Projectile Motion Equations Projectile motion refers to the movement of an object in a parabolic shape being launched from a certain angle at a certain speed An object launched in a projectile motion will typically move up and forward to a certain point and then forward and down before stopping Even though there is motion in both the x and y directions during projectile motion there is not always both X and Y displacement This means that to solve for variables in this kind of motion we separate our vector equations into x and y equations X Xo Vxot Vx Vxo Vx Vxo at Vx2 Vxo2 2 a x xo y yo Vyot 5 g t2 Vy Vyo gt Vy2 Vyo2 2g y yo Projectile Motion For No y Displacement These notes represent a detailed interpretation of the professor s lecture GradeBuddy is best used as a supplement to your own notes not as a substitute Initial velocity Vo tells us both the size and the angle of the motion as it has both magnitude and direction If you shoot something off from the same height that it will land i e if you throw something from the ground and it lands back on the ground then both y and y o are equal to zero causing the displacement in the y direction to also be zero This means the unknown of your projectile motion will be the change in the x position To find this you will need speed in x direction and time The easiest way to find time is to solve using the equation y y o Vyot 5gt2 Because we know y displacement is 0 this equation can be simplified to t 2Vy o g To get Vyo we will use the equation Vyo Vo Sin or Sin Vo Vyo where the angle of velocity and Vo the velocity at which the object is launched It is important that we use the equation involving

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