Guessing the Bounce Plate Affect
Abstract
The goal behind this experiment was to estimate the distance a ball would travel after it falls a certain distance and bounces off a metal plate which has an angle of 45 degrees. To find this we had to take the basic equations for kinematics which are (1/2)at2=x and v=v0+at and combine them to make an equation that will help us solve for the distance the ball will travel after hitting the bounce plate. The equation came out to be R=g*(sqrt(2)/sqrt(g))*(sqrt(H)*sqrt(h)), as that g is acceleration of gravity, h is the height of bounce plate, and H is the height of where the ball will be dropped. After completing this experiment the result was that the standard deviation was +/- 2.3 cmfrom the
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|X(3) |18.7 |27.2 |24.2 |13.8 |
|X(4) |19.5 |25 |27.9 |13.1 |
|X(5) |15 |26.4 |22.8 |13.3 |
|X(6) |20.3 |28.7 |24.6 |10 |
|X(7) |23.5 |28.7 |24.6 |17.2 |
|X(8) |16.7 |23.6 |26.6 |13.9 |
|X(9) |16.2 |25.8 |23.2 |15.6 |
|X(10) |19.2 |25.5 |24.5 |17.2 |
|X(11) |21.5 |29 |26.4 |15.1 |
|X(12) |18.7 |28 |26.5 |14.3 |
The factors at play during the catapult test were the most complicated out of all three tests. One of these factors was projectile motion. Projectile Motion is motion under the influence of gravity and is represented by the equation h(t) = –4.9t2 + v0t + h0, where v is equal to the initial velocity of the object and h is equal to the initial height of the object. The initial height of the object should have been the same because the soccer ball was released by pulling 91 cm (3 ft) back and 61 cm (2 ft) down. This means that the velocity had to change for the results to have any variation. Newton’s Second Law applies to this test as well. The greater the mass of the ball, the more force it will require to achieve the same velocity as the balls that weigh less than it. So, the balls with lower pressures should have performed better. However, potential energy also applies here. PE=mgh. The acceleration due to gravity and the height were the same, but the mass changed. With a decrease in mass comes a decrease in potential energy. So, the potential energy would have been greater with balls of a higher pressure. Kinetic energy also came into play in the catapult test, but it was balanced. KE=
With today’s changing world and the economy the way it is, it is not uncommon for people of all ages to enter the college setting. In fact, two-thirds of students entering the college setting are classified non-traditional (Brown, 2007). Bill (2003) found that there was an 11% increase of non-traditional student enrollment from 1991-1998 displaying 35% in 91 and 46% in 1998. These numbers have since increased according to Jacobson & Harris (2008) showing that half to 75% of undergraduates consist of the non-traditional student sitting the reasons for reentering the college setting to be economic. What exactly defines a non-traditional student and what services may they need in comparison to the traditional student.
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Now that we have a9 we can we can calculate the costs for a 90-foot-tower with the following formula:
Beaker contained vinegar and water, the water got a little cloudy and the vinegar smell is very strong.
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Both “Knocking” by Rick Hautala and “The Road Virus Heads North” by Stephen King are masterfully crafted horror stories that lead readers on a psychological rollercoaster. The authors are able to generate such a detailed and in-depth atmosphere that it causes readers to picture themselves in the terrifying situations that they have devised for those reading. Through the evolution of “monsters”, point-of-view and atmospheric conditions which help to create a mood that engulfs readers both King and Hautala are able to write brilliant horror stories.