Monday, April 20, 2015

Lab #7 Trajectories

Purpose: Use projectile motion to predict where the ball will impact an inclined board.


With this set up we have to launch a ball from some point on the ramp then let it hit the floor where the carbon paper is. We launch the ball several times in order to make sure that the point of impact is generally the same.











The carbon paper was able to mark where the ball landed each time. Ours turned out to be around 0.701m from the table with the angle at around 25 degrees.


Once that is gathered we calculated the speed and time of the ball launch using the measurements recorded.


It turns out the velocity is 1.59 m/s while the time is 0.44 second.

For the second part of the experiment we had to predict where the ball would land if it were to blocked by a slanted board. We accomplished this by using the velocity and time gathered in the first part.
We predicted the distance to be 0.487m along the incline. After the derivation we are able to run the experiment to determine the actual distance the ball hits on the board.


This is the setup with the inclined board and the carbon paper attached. We do the same thing as we did in the first part. Launch the ball a couple of times in order to get a general location then find the average.











The actual turned out to be around .488m along the board which was pretty close the one we calculated before hand. However, we could not just end it here. We need to calculate the uncertainty because the tools being used all have a certain amount of accuracy. So after the calculation we gathered the distance to be 0.488+/- .0315. All the work is shown in the photo below.

Our experiment was pretty successful because the distance we came up with was generally the same as the one calculated.

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