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Factoring & Projectiles
Factoring helps us find ... -
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Projectile Project Timeline
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Factoring
When you factor an equation you are finding the x-intercepts, or the zeros. These could be used to find the starting and ending points of a projectile. Once you have found the zeros of the equation you can figure out how far the projectile has traveled and how longer it was sustained in the air. -
Quadratic Equation
ax2 + bx + c = 0
The quadratic formula is used to find the zeros of an equation. This formula can be an advantage if the numbers given aren't whole numbers. If you can't solve an equation in your head, then the quadratic equation must be used. An example would be our projectile project. We had to find out how far, how fast, and how long our projectile was in the air. To find these numbers, we used our found numbers and punched them into the quadratic equation. -
Projectile Formulas
The angles that I was assigned were 80, 70 and 60. To find the upward velocity, you take the intial velocity, multiplied by sin(and your angle of launch). My upward velocity equation looked like this: 288sin(80).
To find the horizontal velocity you must take the intial velocity, multiplied by cos(and your angle of launch. My horizontal equation looked like this: 288cos(80).
The projectile that we launched at 80 degrees stayed in the air for about .72 seconds and traveled about 36 cm.
