The “Just Drop It” investigation was very informative and taught important lessons. The purpose of the experiment was to find the effect of a ball’s drop height on its return bounce height. The experiment was executed by dropping three different balls of different masses at 100, 75, 50, and 25 centimeters. The major finding was the return bounce height depended the most on the ball’s mass and from where it was dropped. The hypothesis that if it the ball was dropped from a higher drop points, it would have a greater bounce height was supported. Other researches had similar data but were never exactly the same. This is most likely because the reading of the return bounce was not exactly correct and neither was the drop height. One thing that
During this lab, the hypothesis was proven correct. The 80 cm drop had a significantly larger splatter than the previous tests. The fact that a higher drop will create a larger splatter was proven in this lab. Also, our group found that the droplet also moved when we dropped it from the 40 and 80 cm heights. Although during the lab, the droplets kept getting caught on the meter. Our group had to make sure to keep the droppers far away from the meter stick so that we wouldn’t have to re-test. In conclusion, the hypothesis formed during this lab was proven
If the trials had followed conservation of energy as predicted, losing no energy to air resistance or any other outside force, the balls would have flown to the same height as our predictions; therefore, if the balls flew lower than the predicted heights, some energy must have been lost from the system. We can assume that some unknown thing took energy out of our system, preventing the ball from flying as high as it would with no energy loss. This unknown might be air resistance or a type of friction; it could also be something not yet discussed in class. Since the lab was performed assuming that this unknown did not exist (or was not affecting the system), it’s difficult for the group to be able to determine what the unknown is or to what degree it influenced our
After viewing the trials of drops, multiple flaws were highlighted in many designs of the lab participants. One flaw that could have been improved on was more even distribution of straws surrounding the egg compartment, rather than overbuilding on one side. This could be solved by building symmetrically. Another noticeable flaw was the reckless flight patterns of designs
Your group of 2 will be given 3 balls (a tennis ball, golf ball, and a ping pong ball).
The purpose for the students of the Energy of a Tossed Ball Lab involved learning how to measure the change in kinetic and potential energies as a ball moves in free fall. Since there is no frictional forces working on the ball the total energy will remain constant and the students will see how the total energy of the ball changes during free fall.
On the other hand, there are drop balls. Drop balls are the opposite of a riseball, however they are similar to a change up; drop balls are low balls thrown at or near a pitchers maximum speed. Drop balls seem as though they are going to cross the plate as a strike, but then drop before the plate, sometimes plunking into the ground. Therefore, drop balls are caught very similar to how a change up is caught. The balls faster speed makes it more difficult to stop. Dropping to your knees and flipping your glove right away will assist you in stopping the ball and stopping runners from advancing.
By using a 1 meter ruler to measure the bounce height in centimeters. Video footage will also be utilised to measure the bounce correctly by watching the film in slow motion.
1. What is your question? Which ball will hit the hardwood floor the fastest the medium foam ball or the small rubber ball? 2. What assumptions do you need to make to try to answer the question? (Assumptions are things you don't know, but might suspect.
This experiment involved the work of two people, with one person dropping the ball, while the other person recorded the experiment allowing for a display of data. Firstly, place one ball on the top pan balance to find the mass of the ball, repeating for each ball. This is to ensure that each ball has a different weight, without being too similar. Make sure to choose three completely different balls. For example, a golf ball, tennis ball and basketball.
Knee valgus during the drop jump test (DJT) has reliably been used to predict risk of ACL tear1,2,3,4,5. To perform the DJT, participants stand on box that is about 40 centimeters high on average. They are then instructed to jump off the box, landing with both feet on the ground, followed by a maximum vertical jump. Before performing, most researchers or clinicians will demonstrate the motion to ensure each participant understands the task. Typically the participants will perform the test at least three times in order to ensure accuracy.The motion is observed or video-recorded to notice the presence of knee valgus throughout the test, which may then predict for risk of ACL injury.
The marker tape, along with a meter stick was used to measure the distance traveled by the ball at the first bounce. Using the LabQuest to measure the velocities the projectiles were launched at helped minimize error. If the launch speed had been left uncontrolled, the results would have been inconsistent, as the projectile could have been launched to an unreasonable distance compared to the controlled trials, and our initial velocities would have been either too high or too low. Keeping our pressure used to launch at 25 psi and watching the projectile launcher were both critical to achieving consistent
What I love about these space shuttle experiments is the fact that the students and teachers are involved together. There is communication throughout all the schools involved and unanswered questions are always given an answer. When students in the classroom are given an experiment like this, it is going to create a learning environment that is enjoyable for learners. The author of the article, Robert
The experiment began with inventory of the tools that were used for the experiment: metal ramp, solid metal ball, table, white board, stop watch, tape measure, and a calculator. The metal ramp was positioned at three different heights. The metal ball was dropped from the top of the metal ramp and the time in which it took for the ball to roll completely down the ramp was measured in seconds using the stopwatch. The length of the metal ramp measured at 1.25 meters using the measuring tape. All information was recorded on an Excel spreadsheet.
This experiment proved, or supported, the fact that pitch is inversely affected by length. This basically means that, when length goes up, pitch goes down, and vice versa. These results can be helpful in real life in many ways. In designing or creating instruments, the relationship between pitch and length is extremely helpful and important. For example, the reason why a piccolo can play higher notes than a regular flute is because of its length. Since the piccolo is shorter, it can reach higher pitches than the flute. This is the case with many other
Basketball is a favorite sport to many Americans. It is a sport that takes strength, determination, hand-eye coordination and many other challenging aspects. All of this skill is used to do one thing, put the ball in the hoop. The ball itself is surprisingly very complex and takes a while to be comfortable with it.