Also its Gravitational Potential energy is decreasing because its height is decreasing. Create flashcards in notes completely automatically. It depends only on the elasticity of the ball itselfa super ball returns a large fraction while a beanbag returns a tiny fraction. This is correct unless the ball shows signs of reaching terminal velocity. As in both cases the main form of energy is GPE it follows that the higher the ball is dropped from, the higher the ball will bounce. The formula for kinetic energy is KE=1/2 mv 2 , where m is the mass in kg and v is the velocity in m/sec 2 . The answer lies in how far the ball has dented inward due to its collision with the floor. D) If I freeze a tennis ball, then it will not bounce as high. Then when dropping the ball again eye level was kept level with the blue tack. Kinetic energy is energy of motion. It was difficult to accurately measure the height of the bounce. The motion of the ball can be described using velocity, displacement, and acceleration Ramp and ball, controlled study lab report The maximum and minimum results were included when working out the variation between results however, seeing as the maximum and minimum results were produced by the experiment and are therefore part of the variation between results produced by the experiment. The ball has reached its terminal velocity and cannot fall any faster (unless dropped in a vacuum). As the ball is falling toward the ground its Kinetic Energy is increasing because its speed is increasing. This means that the faster that the ball travels the larger the force of air resistance upon it. Please note that many online stores for science supplies are managed by MiniScience. " The acceleration on the ball is the acceleration of gravity, which acts downwards on the ball. of the users don't pass the Bouncing Ball Example quiz! Its high order and functions achieved with differential and integral operations can't fit any circle, because circles must cover constant speed in simple harmonic motion. This is because as the ball goes faster it passes through a greater volume of air each second. As the ball is accelerating due to gravity, at 9.81m/s2it is constantly getting faster and therefore the drag force gets bigger and bigger. Controlled Variables: Bouncy ball used, surface bounced off of, technique in which ball was dropped (initial height was measured from base of ball). In this project we will try to find out what factors affect the bounce of a dropped ball. Possible sources of error include several types of measurement errors. 7. 2. When dropped on a solid surface, not even a super ball bounces back as high as its initial height, but some balls do bounce a lot better than others. The dependent variable is how high the ball bounces. Control variables include the type of ball, the surface that it is dropped onto and the size of the ball. 3. Testing reaction times can be investigated by dropping a ruler and seeing how quickly someone can grab it. The independent variable is the person who is trying to catch the ruler. Earn points, unlock badges and level up while studying. This causes the amplitude of the height to reduce over time and eventually come to a stop due to friction forces like air resistance, which are assumed to be zero in an ideal scenario. The terminal speed is the maximum speed reached when an object is dropped from a great height. the Scientific Method Using the geometric sequence for an infinite sequence and substituting the given values we get: \(S_{\infty} = 2 \cdot \frac{\alpha}{1-r} = 2 \cdot \frac{6m}{1-0.38} = 19.35 m\). Grades: Preschool and K-2 Length of Lesson: Approximately 45 minutes Related Video: The Hawk Factor episode Learning Goals: WebRamp and ball, controlled study lab report. GPE also changes as the ball falls. These stages are continuously repeated and shown in the sequence below. will differ from the height that the ball would have reached had it been dropped in a vacuum. The balls are shown at rest, about to bounce back up. Have all your study materials in one place. CR can be found out by looking at a graph, the gradient, as a percentage of 1 gives the amount of energy conserved and therefore CRcan be found without knowing v22or v12. The material ball is made from will affect the ball as if it is smooth then the drag will be significantly less than if it is rough. The example of the bouncing ball is used to study projectile motion in mechanics. The purpose of our lab was fulfilled. Upload unlimited documents and save them online. These balls do not bounce as well as balls with high air pressure. You measure this response, or record data, in a table for this purpose. Averages are more reliable than using one result as they take into account variation between results. changing air density, temperature The surface onto which the ball Questions lead to more questions, which lead to additional hypothesis that need to be tested. The controlled variables in this experiment are the surface the ball is rolling on, the material the ball is made of, the size of the ball, the measuring devices being used, the distance the ball travels, and the method being used to release the ball each time, for example the position of the hand. The third stage is the point at which the ball is momentarily deformed, and bounces off the ground in an upward direction until it reaches its maximum height. Therefore any change to the height from which the ball starts with affects the height to which it bounces to. Parallax error will be avoided by dropping the ball one time that will not be measured and placing a blob of blue tack onto the meter rule at the approximate height it bounced to. The ball weighs exactly 2.5g. It goes back to its initial vertical position after a period of time. The ball rebounds to 38 percent of its previous height and continues to fall. = The distance between the bottom of the ball before it is dropped and the ground. it seems the ball is experiencing an oscillatory motion. This applies to a ball falling in a vacuum. It shows that heights were recorded that exceeded the height that the ball would have reached had it been dropped in a vacuum. This is why it. Either the coefficient to restitution that was worked out is incorrect, which would mean that the first three results are inaccurate or subsequent results were inaccurate. For instance, air resistance would slow down the tennis ball much more when it is dropped from 100 m than when dropped from 1 m. This difference in impact speed would probably affect the bounce height. For example a regulation tennis ball is dropped from about 1 meter. For the lower heights the flight time of the ball was extremely short and again it was difficult to move ones head over the distance from h. Do a larger amount of results; 1cm, 2cm, 3cm, 4cm etc. In a real-life scenario, the ball will eventually stop moving due to external forces such as air friction. Use the same point on the ball (top) or (bottom) when judging both the height of the drop and the height of the bounce. Controlling Variables Part 1 ( Video ) | Chemistry | CK-12 Foundation ThatQuiz The mass of the ball will affect the height the ball bounces to because it affects the balls starting energy. A) Find the total distance of travel until the ball hits the ground for the 5th time. Why if you drop a ball from say 2 meters does it bounce higher than a ball dropped from 1 meter? At 3ft, the basketball bounced 20 inches, the tennis ball bounced. - Height at which the Once the drag force equals the gravitational force all forces are equal and acceleration stops. If you did not observe a consistent, reproducible trend in your series of experimental runs there may be experimental errors affecting your results. WebThere are many different variables that would affect the bounce height of a ball.
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