mL cylinder to the beaker on the stir plate and empty it into the beaker. Raise the thermometer and lid off the calorimeter, and carefully transfer the bundle of Kinetic Energy Practice Problems 1. The analysis of. The first step was to graph the distance-time graph from the data collected. Suggested Answers 1. releases or absorbs thermal energy by chemical processes. 3. m 1 < m 2 If m 1 < m 2, then v 1f < 0, which is to say that object 1 reverses direction. We'll study two main types of energy today. Learn about conservation of energy with a skater gal! Therefor all the momentum from the object that is initially moving will be transferred to the other object. in Table B. Velocity is how, The purpose of the experiment was to use previous knowledge of velocity yo perform kinetic energy calculations, make calculations of gravitational potential energy, and to determine what affects GPE and KE more. Be aware that your course may or may not be on the file. information about whether it c) Put a clean, dry stir bar inside a clean, dry 50 mL Erlenmeyer flask. The carts were placed on the track so that the Velcro side of each cart was facing the other. The carts were placed on the track so that the Velcro side of each cart was facing the other. The initial velocity of the standard cart and the final velocity of both carts, moving together as one, were measured using the Photogate sensors. Two clay balls are moving toward each other. Repeat the process of data collection at least 5 times and take the average. Read through the scenarios below and calculate the predicted change in kinetic energy of the object compared to a 50 kg ball traveling at 10 m/s. Visit EdgePlus+ for a purchase key. The standard cart was pushed towards the plunger cart, which was at rest. These sensors were attached to a computer, which was running the Logger, program, through a Vernier computer interface. an object in motion Kinetic object Remove the three cups that have samples of 100 g. Stir each sample gently to mix them, Place a small amount of candle wax into a tiny test tube that already has wax in it (scrape it off a tile using a micro spatula). introduction this section should provide A rescue diver of mass 89 kg jumps from a hovering helicopter into the ocean 20 meters below. Theology - yea Each object can only have a certain amount of energy and that energy is in different forms. Current I1=2.50AI_1=2.50 \mathrm{~A}I1=2.50A. = Now find KE. We used the equation Y=mx+b, in order to compare the velocity of each trial by comparing the slope and the y-intercept. u=MF)1\?Nt5hfw!wt{w{ry5Z~sMezs,'wMp+`$71MA. Let's start with GPE. Each chemical compounds has a certain percentage of ionic character in its bonds and the remaining percentage as covalent bonds. Place the strainer and lead in the hot water bath. This friction converts some of the energy of the ball into heat, making the value measured for KE less than expected. . You probably found that your values for KE were slightly less than that of GPE. The equation for KE is 0.5 multiplied by mass, multiplied by velocity squared: If you're struggling getting the time exact, try doing the experiment with two people. Record the final temperature value for each cup in Table A. D. fastest. Overall the total energy (kinetic plus potential) is __________. If you want to start doing an Answer Key too! Using a 500 mL beaker This experiment will be exploring, in depth, Newton's second law. kinetic energy to object 2. This proved the groups hypothesis. 1 0 obj
PDF Half-Life Data-Teacher Answer Key - US EPA Energy Skate Park: Basics - Conservation of Energy | Kinetic Energy Additionally the lab taught how to properly work with carts on a Dynamic Track. QUESTION: How do mass and the type of material affect thermal energy transfer? PDF Warm-Up Introduction to Waves - lessondocs.edgenuity.com These values were recorded, and the procedure was repeated two additional times for a total of three readings. Although there will be less friction than sliding it across a rough table, it's still there. in the water. f. Make a hypothesis about which set of sample mass, the 200 g or 100 g, will heat up the In the presence of nonconservative forces (like friction), the total mechanical energy is, In the presence of nonconservative forces (like friction), the total mechanical energy is not conserved. The conservation of momentum is a very important concept in physics. PHYS207 Lab Report Template 4 - Work-Kinetic Energy Theorem circle one Additionally, the lab will teach how to properly use Dynamic Tracks, which will be a valuable lab skill in the future. PDF Kinetic Energy and Motion >> If using one heat lamp, put the six cups in a tight Dry sand 100 19 63 44 As the height decreases the _________ will decrease while its kinetic energy increases. Start a timer or note the time on a clock. The raw data readings for the elastic collisions are shown below. We interpret the = sign to mean that the gravitational potential energy of the ball before it fell was converted into an exactly . (3 points) Covalent bond, methane. Overall the __________ (kinetic plus potential) is conserved. At the __________ the potential energy is considered equal. A rod was used to push down the button on top of the plunger cart. Do this a few times to find an approximate horizontal distance from the base of the table to where the duck initially contacts the ground. Water 200 20 30 9. Work & KE - 1 Ensure the cap is tight. Place the calorimeter (no lid) on the balance and tare the balance. The final condition tested was explosions. sample. In this experiment we will be measuring the rate of decomposition of hydrogen dioxide with the following reaction: 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. Dry sand 200 19 40 21. As mentioned in the research, projectile motion was shown when the marshmallow was launching. What buret reading should you record when the liquid level is as shown in Figure 2? Set up samples to examine thermal energy transfer with varying material and mass. Because momentum is conserved we can state that the final momentum of a system is equal to the initial momentum of a system in the following equation. a. 2. I'm remaking this, so it'll be more coherent. 2. 124 lessons. After the time has elapsed, record the actual elapsed time in the Tfinal column in Table A. One cart was a standard cart with a rod on top. All other trademarks and copyrights are the property of their respective owners. then place a thermometer in each cup and observe the readings until they do not climb The Just Drop It investigation was very informative and taught important lessons. - Benefits, Foods & Deficiency Symptoms, Working Scholars Bringing Tuition-Free College to the Community, Investigate conservation of energy through measuring potential and kinetic energy. Energy Forms And Changes Phet Lab Answer Key Pdf Lab report law of conservation of energy states that the total energy of the system remains same, and energy cannot be created or diminish, it can just. What are the units for kinetic energy? This button released the plunger, and propelled both carts down the track in opposite directions. If this wasn't your finding and GPE was greater, you might have some errors in your timing for dropping the ball. In this lab it was found that momentum was conserved in each of the situations above. The purpose of the experiment was to find the effect of a balls drop height on its return bounce height. @W The values of the velocities were shown on the Logger. Measure the mass of your ball on the balance. In experimental situations the numbers will not come out to be exactly perfect, but if the ration of the momentums is close to one it will indicate that momentum has been conserved. At the level of reference the potential energy is considered ___________. lab notebook. These equations are as follows: The purpose of this lab was to test the relationship between velocity, position and time. An object moving with a speed of 67 m/s and has a kinetic energy of 500 J, what is the mass of the object. We can say that one form of energy (potential energy) is converted in another form of energy (kinetic energy). Whenever an object moves, some energy is converted to heat through friction. For more information, please see our Ionic bond, table salt. Its like a teacher waved a magic wand and did the work for me. In your observations, include qualitative This was done by causing elastic collisions, inelastic collisions, and explosions of carts on a Dynamic Track. ANSWER KEY . In this lab two carts will undergo elastic collisions, inelastic collisions, and explosions on a Vernier Dynamic Track. Covalent bonding is a root within Organic and Biochemistry that needs to be understood in order to fully understand the theories and concepts discussed in both forms of chemistry. energy that spontaneously passes between a system and its surroundings in some way other than through work or the transfer of matter. c. Observe the increase in temperature every 20 seconds for 3 minutes, or until the bundle If you want the answer key, you can dm me or you can comment so it'll get more people to see it. If your time is greater than it's supposed to be, your results won't make sense. lab kinetic energy edgenuity answers. and securely tape the cylinder to the board with the packing tape. In elastic collisions the objects that collide do not stick together, and both continue on with new velocities after the collision. Heat Transfer - The movement of thermal energy from one object to another of a different temperature. first example, heat energy is transferred from the stove to the pot of water, and the water absorbs the heat energy and will eventually begin to boil.