After watching this incredible performance, I decided I would take it to the next step.  I wanted to see if the Physics we learned in class can be applied to this video, so i tried it out.

The Information Given:

The height is 245 ft which equates to around 74.67 meters.

The slope of the decending angle is around 30 degrees.

I estimated the Initial Velocity to be around 3 m/s.

From here I Came up with this formula.
Yf= 1\2(-9.8)(t^2)+Vi(t)+74.67m (what is Vi)
Since this is a quadratic equation, I solve for (t) by using the quadratic formula.

(t) came out to be about 4.22s. If you watch the video from the time he jumps till he hits the ground, it come out to be about 4 seconds, so the physics does work out pretty well in this scenario.

But I didn’t stop there, my physics craving brain took another step forward. It wanted to know how far the skier traveled horizontally. Lucky, we just learned this in class so I was able to calculate this with ease.

Since I know the angle is 30 degrees and the hypotenuse is 3, I used the Equation sin 30= x\3. This gave me the vertical velocity
of 1.5 m/s. Then, from here I used the Pythagorean theorem to discoved the horizontal Velocity, which was about 2.59m/s.
Since I know both the horizontal velocity, and the time it took the skier to reach the bottom, I am able to find the Change in Horizontal Distance by multiplying the two.
4.22(s) * 2.59(m/s) =10.928(m)!
There you have it! It took this guy 4.22(s) to reach the bottom, and he ended up about 11(m) further than he began!!!

As you can see, the video is awesome. How the video works is due to the speed at which the pump pumps out water and the refresh rate of the strobe light in the background. As seen in the end of the video the drops are not slowing down or stopping, but the strobe light makes the drops appear to be stopping. The drops that appear to be falling in slow motion are actually completely different drops every second. The first drop is replaced by another one down the line but our eyes perceive it to be standing still. To learn more about the experiment click here.

I believe everyone should watch it at least once to make sure that we really, truly know what are different type of forces.

To calculate how far the bullet would fall if it indeed was affected by gravity, I used the formula delta(y) = .5*a*t^2.  This results in a vertical change of -5.15 meters.  To test if this is simulated in the game, I lined up the bullets path with a flat vertical surface.  as seen in the photo below.  Although wind is greatly simulated in the level, this will not affect the distance the bullet falls since the time is constant.  The result is clearly visible in the screenshot below:

As the screenshot shows, the bullet is definitely affected by the wind, but did not fall vertically at all.  This proves that gravity is not acting on the bullets in Call of Duty 4.  I find it ironic that the game is knowledgeable enough to mention things such as humidity and even the coriolis effect, but doesn’t include something as common as gravity.  I guess those game developers need to freshen up on their physics!

Click here to view the embedded video.

This video is from the game Battlefield 3, where physics are present everywhere, especially when bullets drop. After doing a bit of research about this video, I found the values of this incredible shot. I found that the height of the tower he landed on is roughly 340 meters tall and the gun that was used was the M98B, which has a muzzle velocity of 878 m/s. It said that the head shot was 961 meters away, diagonally. This makes it a projectile motion problem. I tried, but miserably failed, to solve for the angle of the shot because of the absence of time so if you think you can, go for it!