Drop two balls… Place a tennis ball under one foot and start to roll the sole of your foot over the tennis ball. An investigation of the factors that influence the bounce height of a tennis ball when dropped onto the floor could consider the drop height and the type of surface the ball is dropped onto. The investigation could try to answer these research questions: What effect does the drop height have on the bounce height of a tennis ball? Number 3-Take the measurement of the rebound. mechanical energy of the tennis ball–basketball system decreases during the collision. The scientific equation for determining the pressure of gas is “p=rRT,” where “p” is the pressure, “r” is the density, “R” is a constant specific to the gas and “T” is temperature. The laws of gravity dictate that a bowling ball will always drop faster than a feather. •. 2. In sports, the use of machine learning for locating and detecting … The dependent variable is the height of the bounce each ball gets when being dropped from the same height. Bouncing Ball Experiment . A 0.5 kg tennis ball is dropped from rest at a height of 5.6 m onto a hard floor. Drop a tennis ball and a football at the same time with the tennis ball on top - see the tennis ball fly eight times higher than it did before. The procedure also involved observing how the height from which a ball is dropped affects its bounce. Question 1. The ball will tend to come off the table flatter and faster than if it was just blocked back. This is an extreme example of topspin in use. In order to observe the mechanisms of string-ball friction during snap-back, three related experiments were created. You should hold the ball from its sides so that you can release your grip as you let it drop. To start, drop the tennis ball from shoulder height – make a note of how high it bounces back up. What do you notice? Do three trials and record the height of the bounce each time. The drop weight was instrumented with a force gauge, accelerometer, and LVDT (linear variable differential transformer). In order to observe the mechanisms of string-ball friction during snap-back, three related experiments were created. Procedure: First take the basketball and tennis ball and hold them with the tennis ball ontop. How should we design this experiment? The energy goes into deforming the ball -- from its original round shape to a squashed shape. Once finding the relationship we can then linearity the data. 3. A heavily stylised underspun ball: The ball will … 2. You worry me because you let the top of the set square align with the center of the ball, whilst the h and d in the figure are measured with respect to the underside of the ball. Try changing the length or diameter of the straw. Key factors (variables): 1) Height of drop 2) Surface of bounce 3) Gravitational pull 4) Room temperature/ball temperature 5) Weight of ball 6) Material of ball 7) Brand of ball 8) Age/wear of ball 9) Size of ball 10) Force of drop/push Record the height on the chart. Home; Scientific Method; Investigation. Number 2-Drop the tennis ball from each of the different heights three times as shown on the chart. Discussing the variables involved in this experiment. The variable to be changed in the experiment is the drop height, therefore the drop height will be the independent variable investigated. The effect of changing the drop height will be measured by calculating the bounce efficiency of the tennis ball. Drop a baseball on the floor and notice how high it bounces. The ball gains energy of motion, known as kinetic energy. Record the average time in the table. Do not throw the ball. Experiment further: What experiments can you try with gravity? 3. class time: 5 to 40 min. Place the video camera on a level that will be able to clearly record the experiment, whilst a person sits beside the... 4. Method: 1. It bounces back to a height of 18 cm. Young's modulus is too complicated in this experiment. Firstly, place one ball on the top pan balance to find the mass of the ball, repeating for each ball. Remem-ber to drop the ball and not throw it, otherwise you will change the intent of the experiment. 2) Repeat at the same height with the large ball. It bounces a little, but not much. experiment - battle of the ... . Explain your choice. The bounce height was divided by the drop height to find the ratio, and then that was subtracted by 1, since it was percent lost. In Graph 1, results for the experiment which investigated the effect of surface (data in categories) on bounce height of a tennis ball has been plotted as a bar graph. 1) Hold a small ball about .75m above the floor. Think it’s easy? This way I'm getting distance traveled, and time. Remember to drop the ball and not throw it, otherwise you will change the intent of the experiment. 1. • Carefully climb the ladder or step stool with the two balls. If you drop a feather and a rock at the same time, you know the rock will hit … However, for variables to the experiment, take another two strips and make one smaller hoop and one larger. Hold the tennis ball as high as the top of the meter stick (100 cm) and let it drop. Download the Hand dropping tennis ball for gravity experiment 2173975 royalty-free Vector from Vecteezy for your project and explore over a million other vectors, icons and clipart graphics! 4. This proves that no work is 100% efficient and that everything has some wasted energy in the process. Have each group set up a testing station and follow the directions on their ―Height of Rebound‖ work-sheet. Measure the height the ball reaches after the first bounce and record. The concept behind this is the same as the old-fashioned trick of yanking a tablecloth out from under a place setting of dishes… except that it’s a lot less messy if something goes wrong. Drop both balls at the same time. 1. How fast do different objects fall? You can create a science fair project by identifying a variable, or something that changes, in this experiment. Watch carefully to see how high it bounces back up. That way we'll start hitting the ball more cleanly and feel much better how it is to hit the ball well. Place the video camera on a level that will be able to clearly record the experiment, whilst a person sits beside the tape measurer 4. Turn the video camera on to record everything that happens there onwards 5. Drop the tennis ball with the cooler temperature, with no added pressure of the hand, directly down but not in the way of the video camera Where the data for both variables is continuous (ie recorded on a measurement scale such as length in centimetres or mass in grams, it is possible to plot a line graph). The dependent variable is the height of the bounce each ball gets when being dropped from the same height. Validity: The experiment was valid because the only variable that changed was the type of surface the tennis ball was dropped on, all the other factors were controlled and made sure to be the exact every time. Transcribed image text: Average 31.3 cm 65 cm 65 cm Experiment 1 - Type of Ball Golf Bounce Height (cm) Drop Height (cm) Trial 1 Trial 2 Trial 3 40 cm 31 cm 31 cm 32 cm 80 cm 67 cm 66 cm 62 cm 120 cm 65 cm 65 cm 65 cm Experiment 2 - Type of Ball Tennis Ball Bounce Height (cm) Drop Height (cm) Trial 1 Trial 2 Trial 3 40 cm 24 cm 24 cm 24 cm 80 cm 48 cm 49 cm 50 cm 120 cm 70 cm 70 cm 1. Demonstrating a floating ping pong ball is pretty cool, but it isn’t a science fair project. Do not throw the ball. Repeat steps 7 and 8 for the marble. Dropping a basketball and a tennis ball from the same height. The ball gains energy of motion, known as kinetic energy. Make a stack of pennies land in a glass of water with this fun science experiment! Procedure. By Rod Cross and Crawford Lindsey Various tennis ball types are designed differently, manufactured differently, and perform differently. Conduct an experiment to find out an answer to this question. Both will strike at the same time, as the resistance due to air is almost exactly equal. In the case of our current experiment, the tennis ball will fly up to 9 times higher than it would without the help of the basketball. Drop a stack of balls on the floor. This same trick can be done with three balls. Mark a piece of paper with an X. Double Ball Drop. Balls were placed on a steel surface and secured with double sided tape. This experiment requires a ball that will bounce and a meter stick or other measuring device. The upper part of Fig. My hypothesis: With an increase in temperature, the tennis ball will bounce higher than that of a ball that experiences decreased temperatures. Once we feel that, we can shorten the exaggeration back to normal movement but still use that feel of going into the ball. If you neglect air resistance, objects falling near Earth’s surface fall with the same approximate acceleration 9.8 meters per second squared (9.8 m/s 2, or g) due to Earth's gravity. Do not throw the ball. This scientific mystery can be demonstrated at home or school with a simple experiment. The way we tested the tennis ball was by dropping them from a certain height and seeing how high they bounce back up. It’s all in what happens when you drop them. Drop the 3 cold tennis balls from the 1 metre mark on the wall. Calculate the gravitational force on each ball (so they will fall). Notice that the tennis ball goes shooting off above your head at a high speed. A 0.5 kg tennis ball is dropped from rest at a height of 5.6 m onto a hard floor. 4. Place one of the tennis balls in the freezer for 20 mins 2. Hold the tennis ball and do not let your elbow leave your side as you run and drop the ball. Write observations about where the ball … Make sure you line up the centre of the balls so that the tennis ball is exactly on top of the basketball. Choose one ball for the experiment (a tennis ball, racquetball, superball, etc.). The tennis ball was a little bigger than the clementine but it fell inside the glass without a problem. Try to drop a tennis ball on a target as you run past the target. Method The 1 meter ruler was placed firmly on the ground, vertically at 90° to the surface. String-To-Ball Friction — Observational Experiments Beam Drop Experiment. The initial heights of drop for each ball … Check the bottom ball to see if it "hits" the floor. Drop both balls at the same time. Several of sports balls, namely, golf, table tennis, hockey and cricket were used in this study. Repeat 2 more times and calculate/record the average time in the table. Place the tape measurer against the edge of a wall using the bluetack 3. In this experiment, the mass of the tennis ball and gravity stayed the same, so I only needed to use the drop height and bounce height. Because it "forgets", the tennis ball swings in sympathy with the current driver oscillation, at the current driver frequency. A ball's gravitational potential energy is … First, a 1" x 1" beam with tennis cloth glued to two sides was dropped between two strings in parallel, pulled to 35 pounds. the ball does not bounce), with an e value of 0. Since the concrete surface is the hardest surface, it allowed more energy to be released from the ball, therefore causing it to bounce … SURVEY. 2. The ball also has a tendency to drop suddenly, Think of the effect a high loop has on the ball. Grab a tennis ball and a basketball and drop them from the same height and the same time. indefinitely as ball’s elasticity has a theoretical maximum and minimum; the maximum being perfect elasticity with a coefficient of restitution of 1 (i.e. Experiment with the amount of weight you can put into the ball and still have an intense, yet pleasant sensation. Make three balls (that part is obvious). Bouncing Ball Experiment Our simple experiment is to drop a ping pong ball weighed at 3 grams from a height of 1 metre then 90cm, 80cm, 70cm, 60cm, 50cm, 40cm and of course zero cm. Repeat the steps for each surface. Penny drop experiment step 1. By carefully choosing the relative masses of the balls, it is possible to send the top ball flying many times higher than the distance it fell. But try the same experiment in a giant vacuum and that's when it gets interesting. Hypothesis: _____ _____ Try to figure out when you will need to release the ball in … Hold the tennis ball and do not let your elbow leave your side as you run and drop the ball. Ball Bounce Experiment. Drop the ball, timing the fall with a stopwatch. Science Behind the Fruit Drop Inertia Experiment. Same drop … Essentially, the tennis ball "forgets" what it was doing 200 seconds ago, so even if the driver was "out of step" then, the fact is forgotten, and the tennis ball accepts energy from the driver. Notice that the tennis ball goes shooting off above your head at a high speed. Is this true for all objects? A: The height to which a ball will bounce depends on the height from which it is dropped, what the ball is made out of (and if it is inflated, what the pressure is), and what the surface it bounces from is made out of. 349 Words2 Pages. Have each group set up a testing station and follow the directions: • Remind students that they need consistent results. Make sure you line up the centre of the balls so that the tennis ball is exactly on top of the basketball. The normal drop test of sports balls were done using test apparatus as shown in figure 2 and 3 above. The COR for regulation tennis balls can be calculated from the ATP regulations. The room temperature ball can sit on a counter for chair near the place of the experiment. Timeline; Variables Independent: - Type of surface the tennis ball is dropped on Dependent: - Height at which the tennis ball bounces Controlled: - Same ball - Height at which the ball is dropped - Amount of force applied - Person dropping the ball. Drop a ball from 1 foot off of the floor, slightly in front of a yardstick. Repeat steps 3 and 4 for the ping pong ball; Have a partner drop the rubber ball 5 times from the 50 centimeter mark and record the height in a table. A drop weight with a mass of 4.3 kg was dropped from a height of 148-149 mm above the top of the ball. The baseball will bounce off the basketball and fly off over your head. 1. The pressure of the gas inside the ball ultimately determines how high the tennis ball will bounce. For this next bit, you'll need to put on eye protection and ask everyone to step back. Drop (do not throw) the ball from a carefully measured height using the meter stick. Whilst the IPad is recording grab and drop, do not push the tennis ball from in front of the ruler at 90cm.
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