Projectile Motion Lab: Using a Toy Gun

Projectile Motion Lab Using a Toy Gun role The purpose of this investigation is to measure the vertical displacement, or height of the launch, and the plain displacement, or incline, travelled by a rocket ( punch from coquet poor boy). Questions What is the shape of the actual path travelled by a projectile? How reason outly does an actual projectiles results follow the theoretic predicted results? Hypothesis The shape of the path travelled by the projectile, in this case the smoking of the gun, is a parabolic.This means that is a juicy shape collect to the pot existence launched in the air (making curve go up) and the earths gravity pulling it down (making curve go down). As the height of the bullets release increases the the magazine to reach the ground result increase, and thitherfore the set out of the bullet leading increase. This is be bear the bullets vertical velocity will decrease later as the height is higher up, having a big time, and therefore a larger ran ge. Materials Toy Gun Fake Bullets Metre Sick Stop pursue General Observations A standard stick was apply to measure the height and the range of the bullet.A engine block was expendd to determine the time it took for the bullet to reach the ground. As the bullet was released, its path was parabolic. This means that its was curvy because it was first int air, but the gravity pulled it back down to the surface. The toy gun was steadily held in my flip. The sign height was the distance from the gun to the surface used. The gun flavor out the bullets at a slightly desist speed. As the height was increased, the more time the bullet took to reach the ground. As the height was increased, the range was also higher.Observation Table Data of various heights used Height (cm) Time (seconds) crosswise distance (cm) 25 2. 26 70. 7 50 3. 19 nose messdy 75 3. 1 122 100 4. 52 141 Analysis Picture of the launcher Height vs. chain of mountains graph- Refer to attached data in the back. Position vs. Time graph- Refer to attached data in the back. The graph results definitely support the hypothesis. This is because as the height of the toy gun was increased, the horizontal distance increased. withal, as the horizontal distance of the bullet increased, so did the time (vice- versa). The graphs were very similar due to the horizontal distance (cm) being invariable on the y- axis vertebra of the graph. In the Horizontal Distance vs. Time graph, the time represented the corresponding heights of the Horizontal Distance vs Height graph. Making the graphs very similar. Determining the Vi of the Bullet Vi = aav x ? t aav = -9. 81 m/s? ?t = 3. 19 seconds Vi = -9. 81 x 3. 19 Vi = 31. 3 m/s v *Therefore the initial velocity of the bullet is 31. 3 m/s v. abstractive Ranges of the BulletFormula- ? d = Vi x ? t Height (cm) Range/ Horizontal Displacement (cm) 25 ? d = 31. 3 x 2. 26 ? d = 70. 7 cm 50 ? d = 31. 3 x 3. 19 ? d = 99. 8 cm 75 ? d = 31. 3 x 3. 91 ? = 121 cm 100 ? d = 31. 3 x 4. 52 ? d = 142 cm Experimental portion Errors For each Range Formula- % error = (experimental value accepted vale) / (accepted value) (100%) Height Experimental Range Theoretical Range Percent Error 25 cm 70. 7 cm 70. 7 cm 0. 0% 50 cm 100 cm 99. 8 cm 0. 00 2% 75 cm 122 cm 121 cm 0. 00 8% 100 cm 141 dm 142 cm 0. 00 7% As it can be seen, there was a very little percent error between the actual and the theoretical range of the bullet from the gun. The theoretical and the experimental ranges were almost identical, and in few cases they wereSources of error The first source of error was the toy guns bullet were non perfectly a cylinder. Since the bullets we made out of plastic foam there some ripped edges. This would definitely give a slightly inaccurate result sine the bullet would not systematically travel in the same way as it is going in a parabolic path. This would cause some twisting and turning of the bullet since the rips would c ollect air and make the bullet therefore go along around (sort of like air pockets). The main problem with this is that the bullet is not consistently travelling in the exact same way.Another source of error was that since the gun was shot from a human beings hand it is really tough to keep the gun at the same angle (zero degrees) as it is shot. If the angle of the gun is not consistently shot at the same angle it will definitely impact the results because the horizontal distance (range) of the bullet will be different each time. If the gun has an angle pointing downward, the range will decrease. The bullet will be in the air for a smaller amount of time, masking piece slight ground. If the gun is pointing upward the range will increase.The bullet will be in the air for a longer period of time, covering more ground. There can be ways though to pose these sources of errors. For the first one where there were rips in the bullet, what one can do to fix the bullets is use show to c over up the holes. Or, a better solution would to buy new, fresh bullets where there are no bend, rips or chance of disfunction. To make sure that the bullets angle is constant after each shot, what one can do is use a stand to place the gun in. This would make sure that the gun is not pointing down or upward, giving very accurate data of the range. ConclusionAll projectiles travel in a parabolic path. Projectile motion is the motion of an object whos path is affected by the draw in of gravity. Everything is affected by gravity, but it profoundly alters the motion of objects that are thrown or shot upward. The bend of the bullet in this experiment is caused by gravity, as well as its falling motion in general. Gravity causes change in the vertical velocity of the projectile. Objects experiencing projectile motion have a constant velocity in the horizontal direction, and a constantly changing velocity in the vertical direction. Thus, this is make the parabolic shape.The actual pro jectiles results were really close to the theoretical results in this case. There were no outliers in the range. If the theoretical range and the actual range were not close it would be due to the tools used to measure the time and the distance. A metre stick was used to determine the horizontal range for the experiment. This is very inaccurate because the bullet dropped way to fast to see the actual landing spot. The landing spot was based on the eye. Also since a timer was used to determine the time of the bullets range this is again very inaccurate since the bullet dropped way to fast to use a stop watch.Overall, the results in this case were luckily extremely close and accurate having a maximum percent error of 0. 00 8%. The reasons for the experimental error was mainly due to the tools used to measure data and, the inconsistency of the angle of the gun. As stated earlier a metre stick was used to determine the horizontal range for the experiment. This is very inaccurate because the bullet dropped way to fast to see the actual landing spot. The landing spot was based on the eye. Since a timer was used to determine the time of the bullets range this is again very inaccurate since the bullet dropped way to fast to use a stop watch.Again as stated earlier, if the angle of the gun is not consistently shot at the same angle it will definitely impact the results because the horizontal distance (range) of the bullet will be different each time. If the gun has an angle pointing downward, the range will decrease. The bullet will be in the air for a smaller amount of time, covering less ground. If the gun is pointing upward the range will increase. The bullet will be in the air for a longer period of time, covering more ground.