Graph's Shape Lab

During the bounce test, the ball may have been released from different points. Although it was supposed to be released from its bottom, human error may have compromised the precision of this measurement. To improve the design of the bounce test, the ball’s bottom point should be marked, and the ball should always be released from there. During the ramp test, the ball may also have been released from different points. Although the ball was supposed to be placed on the ramp so that it would be released from the front, human error may also have compromised the precision of this measurement. In addition, human error may have caused unintentional and unnecessary force applied to the ball. To solve these design issues, a door should be made that holds the ball at a certain position for a fixed amount of time before the experimenter released the ball. During the catapult test, the ball may have been held back for an excessive amount of time. To resolve this experimental design issue, a fixed time to hold the ball back should be

This lab could have contained errors. The errors could have happened when performing the lab. Some of the possible errors in this lab are:

The balls velocity and speed is increased significantly in a very brief period, right before the full extension of the elbow.

In the first experiment, “ How does mass affect your game?” it shows that the data on “Ball- Mass 3” that the 10 pound bowling ball had the highest kinetic energy of 27(J), the greatest velocity (m/s) of 3.42, and in average it produced 4 bowling points. According to the data, on “ Ball- Mass 1” the 11 pound ball got an average velocity (m/s) of 3.14, the kinetic energy of 24 (J), and the average bowling points of 3. On the other hand, the evidence shows that the 12 pound bowling ball in “ Ball- Mass 2” has the velocity (m/s) of 3.12, the kinetic energy of 23 (J), and the average bowling points of 4 . Concluding that in my Game 1 the velocity of the masses of the bowling balls decreased when the bowling balls were heavier and that the kinetic energy was lower as the mass increased in the bowling balls.

The results did not correlate with the pre-lab prediction as

The task that will be performed in the lab is a football snap toward a target. The subject will face way from the target, place their feet about shoulder length apart, place the ball between their feet, bend over and snap the ball through their legs to hit the target. For the experiment, the target is a wall. The wall is marked in increments of 20cm; a center space with five spaces above and below.

Ball velocity was calculated for 6 serves, 3 jump serves and 3 standing overhand serves. Ball velocity was calculated based on distance and flight time. Both of these variables were discovered through Dartfish Analysis Software. Table 3 displays the summarized

Activity 2 ( Energy of a Tossed Ball: Physics with Computers) weighing the rubber ball that was to be used. Then, the members predicted the graphs for the potential energy versus time of a ball thrown vertically up from a height of 50 cm., graph of kinetic energy versus time of the same ball, graph of total mechanical energy versus time of the same ball. The members then placed the motion detector protected with a wire basket on the floor. The file “16 Energy of Tossed Ball” was opened and a member held the ball directly above and 50.0 cm from the motion detector while another member tossed the ball straight up while the motion detector began to collect data. The graphs obtained using Logger Pro were then compared to the predicted graphs.

Hypothesis: If I were to bounce a freshly opened tennis ball, then the ball will bounce higher than a ball that has been opened for a long time

Dropped the tennis ball from 2 m (+/- 0.1 cm) and recorded the fall using an iPhone, and also observed and recorded qualitative data of the drop. Repeated this procedure at the same height with the same tennis ball 5 times in total.

Within this lab, there are many ways that the data collected could be inaccurate. As the data relies on the reaction time and observations of students in the class, it is inevitable that some of the information collected is not precise. If a student was not paying attention to the starter telling him or her to start the stopwatch, then it is possible for the timer to begin timing before or after the cue. This would make the data less precise as some of the times would be skewed, thus making it impossible to determine if uniform motion was truly present. Furthermore, if the starter did not observe the walker crossing the start line correctly, then it is possible that the timers started their stopwatches late as well, making the data just as

The significant data shows a discrepancy in the time needed for the various positions in a Dodge Ball court. Given the size of the court and the various combinations of distance achievable, the experiment has shown that the horizontal paths (1, 2, 5, 6) are generally shorter than the diagonal paths (3, 4, 7, 8) with a direct reflection to their given times of flight. In this case, an individual along path 2 would not have sufficient time to recognize and react to the ball given the variable of the reaction time and velocity of the ball. Therefore, the data as specified proves that the distance, reaction time and velocity all play an important aspect of the game of Dodgeball, when the results are analyzed, it will show the correlation between

Graph 2, illustrates the decrease of soil temperature along the transect line. As can be seen from Graph 2, the soil temperature decreases linearly. From Graph 2, it can be seen that at high tide, where the first quadrat was located, the temperature was 24.1°C. In addition, in Quadrat 2, 3 and 4 the soil temperature was 18.3 °C, 15.5 °C and 14.8 °C respectively. The soil temperature decreased, due to the slope of soil (closer to low tide), canopy cover and soil texture. The relationship between the slope of the ground, canopy cover, and soil temperature is illustrated in Graph 10. As, can be seen from Graph 10, the soil temperature decreased with increase in slope of ground and increase in canopy cover. In Quadrant 1, the slope of the ground was -8°, the percentage of canopy cover was 0% and the soil texture was sandy.

    My expectations is that the changing the tallness of slope will influence the speed of the metal ball.

Hypothesis: if the ball mass (controlled variables) is increased the distance of the tennis ball will, be increased because the larger ball will need more force to decelerate there for the tennis ball will bounce off.