Monday, November 9, 2009

Content: Projectile Motion at an Angle Terms- Review Criss Cross Puzzle

Projectile Motion at an Angle


1. It is affected by gravity throughout the projectile motion

4. R=square root of A^2+B^2


1. This has magnitude and direction

2. These can be derived from the resultant vector and produce x and y values

3. this determines the sign of the x and y component vectors

5. the measure of angle in degrees counterclockwise from the x axis(right)

Friday, November 6, 2009

Content + Application: Eric's Physics Projectile Motion Vs. Roger Federer Video

You are about to enjoy my video over projectile motion at an angle including real tennis court measurements, correct and complete equations, and class humor!
By creating this video I now know inside and out!  Ask me if you have any questions please!  It is not simple so please ask before you waste your time!

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Content: Projectile Motion at an Angle Content


Honor Bound

November 5, 2009


Physics Projectile Motion at an Angle

The initial approach to a projectile motion problem at an angle is to break down the initial resultant vector into its X and Y components (Vox and Voy). You can do this by using the equations Vox = V * cos (), and Voy= V * sin (), where  is the angle above the horizon. After the projectile is launched, it is basically a free falling object with respect to the vertical with an acceleration of -9.8 m/s**2, due to gravity. The X component of velocity (Vox) remains constant throughout the projectile’s trajectory. There are two special points in time during a projectile’s trajectory. The first is when the projectile reaches its maximum height. At this point in time the Y component of velocity is 0 m/s. The second important time is when the projectile is at the same altitude as when it was launched. At this point the Y component of velocity has the same magnitude, but the opposite direction (the sign is opposite). If the altitude of the projectile is above the launch point, then vertical displacement is a positive number. Likewise, if the projectile falls below the altitude of the launch point, then the vertical displacement is negative. This becomes important in problems such as a projectile being shot off of a table or a cliff where the point of impact is at a different altitude than the launch point. The range of the projectile can then be found by finding the time at which the object strikes the ground. Examining the vertical motion in a situation does this. The range is then calculated by using Vox equal to the horizontal displacement times time. These equations ignore compounding factors such as air resistance and friction.  By firing a projectile at an angle of 45 degrees you can botain the greatest range.

Thursday, November 5, 2009

Introduction: Physics Projectile Motion at an Angle!