lab kinetic energy assignment lab report edgenuity answer key

Using a 500 mL beaker Then you can change the height of by adding a .75m desk on top of the .95m table. <>/ExtGState<>/XObject<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 612 792] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>> Measure out approximately 50 g of aluminum wire using a mass balance. Data are reasonably accurate. 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. Additionally it showed that kinetic energy is only conserved in elastic collisions. We can say that one form of energy (potential energy) is converted in another form of energy (kinetic energy). On the Logger Pro program the reading from the first sensor was the initial velocity of the standard cart, and the reading from the second sensor was the final velocity of both carts. There's also a Tips and Tricks folder that needs more added to it, so if you have any of those to give, it would be appreciated. The next condition tested was inelastic collisions. Enjoy!! The fact that the kinetic energy ratio was very far from one shows that the kinetic energy is not conserved in inelastic collisions. The slight discrepancies in the values of initial and final momentum can be explained by some sources of error. In this experiment, we will collect data on velocity, speed, and time. endstream endobj 500 0 obj <>stream Measure out 500 mL of tap water in the 1 L beaker and bring it to a boil using a hot plate Relationship between initial and final velocities in an elastic collision . These results are shown in the table below. A 50 kg ball traveling at 20 m/s would have kinetic energy. Some of them should be addressed in your lab report. c. The three material types should be room temperature, but place a thermometer in each Do this at least five times and take the average. As usual, you should refer to, 1. Think about what you already know about energy. Half-Life Data-Teacher Answer Key 1.Hypothesize what halflifeis: Halflife is the amount of time it takes for approximately half of the radioactive atoms in a sample to decay intoa more stable form. The carts were placed on the track so that the Velcro side of each cart was facing the other. If the mass of an object increases, then its kinetic energy will also increase because, mass and kinetic energy have a directly proportional relationship and have a linear, Independent: mass of the soda bottle (changing amounts of liquid), Measure the length of your wooden board, and divide that in half to mark at, its midpoint. 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. Build your own tracks, ramps, and jumps for the skater. Sample calculations are shown for circle one Data section includes the provided table. 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 . A. temperature change, T, for each sample. These sensors were attached to a computer, which was running the Logger, program, through a Vernier computer interface. After the lab was over this data was analyzed using the equations above to give the following values. This would force the carts to repel each other and not stick together during collision. Dry sand 200 19 40 21. program. 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At the level of reference the potential energy is considered ___________. Also make a hypothesis about which type of material will heat up the fastest. If the compound possesses the qualification of an electrolyte, it can be identified as an ionic compound, seeing as ionic compounds are capable of conducting electricity when dissolved in water. Water 200 20 30 9. Record the exact mass in Table B. program was set up so that it would collect the Gate Time from each Photogate sensor. In inelastic collisions the objects stick together after they collide. In the lab, the aim was to get as close as possible with both accuracy and precision when determining the mass and volume of the spheres. The first Photogate sensor measured the velocity of the standard cart, and the second Photogate sensor measured the velocity of the plunger cart. endobj a. Which samples will heat up faster? -- the products are at a lower free energy, or more stable, than the reactants. e. Measure out approximately 50 g of lead pellets, record the exact mass in Table B, and If the cart maintains at a constant speed, then the cart will have an increase in acceleration. This is the lab data explained. dumping the sample into the calorimeter. 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. Every radioactive element has a different halflife. They should start immediately when you drop it and stop it exactly when it hits the ground. At the maximum height, __, the object's GPE will be a maximum. C is a nutritional symbiont. Wet sand 100 20 53 33. These resources will help you complete the assignment. 10 mL graduated cylinder - 2 g sodium chloride spoon - 2 g sodium bicarbonate conductivity apparatus distilled water in a wash bottle. KE = mv2 KE = ? %PDF-1.5 Additionally, the lab will teach how to properly use Dynamic Tracks, which will be a valuable lab skill in the future. The values of the velocities were shown on the Logger. If that ball rolls down the hill however, all the GPE is converted to KE when it gets to the ground and is moving fast. 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). 498 0 obj <>stream We know that the law of conservation of energy says that energy can never be created or destroyed, so what happened? Lesson: Types of Chemical Reactions, Project: Thermal Energy and Chemical Reactions Students apply knowledge of technological design, as well as techniques of project-based learning in order to investigate the relationship between chemical processes and the release of thermal energy. This would give the velocity of each cart. In conclusion a basketball may look sample but its is very complex and can be very hard to manage. As the _________ decreases the GPE will decrease while its kinetic energy increases. other two cups, filling one with 100 g of wet sand and one with 100 g of dry sand. The first condition tested was elastic collisions. The desk will then be used to launch from a vertical displacement of .75m place the duck up against the book and launch it horizontally, again collecting 5 separate data points and taking the average of the. The only compounds that are accepted as being 100 percent covalent are the chemical combinations that happen between two similar atoms.However if atoms are different in the compound it will present a certain percentage of ionicity in its, III. At the level of reference the ____________ is considered equal. 4. hVmH+qW$RREWUw{Clt!AT` v6\`@8\TL)55 5DxnIe%xnkFgQ \ What is the force required to bring the aircraft to a. Measure the height from which you'll be dropping your tennis ball. 1. This allows for a more accurate measurement. 1. All objects have momentum, even if it is zero, and momentum cannot be lost. If a ball is sitting still at the top of a hill, will it have GPE or KE? <>>> When the standard cart reached the plunger cart they collided, but did not stick together, and the plunger cart moved down the track. Objectives (3): - Explore the relationship between kinetic and gravitational energies - Analyze the importance of kinetic energy in falling objects. These values were recorded, and the procedure was repeated two additional times for a total of three readings. Record this initial temperature for the three metal samples in Table B. Pour out some of the water from your soda bottle to adjust the total mass of, water and bottle to 0.125 kg (125 g). Lab #6 - Work-Kinetic Energy Theorem Therefore, if the work done by a particular force appears not to be equal to the change in kinetic energy of the object, then the system should by analyzed for possible work (positive or negative) done by other forces. ANSWER KEY . hd Now find KE. Place the strainer and lead in the hot water bath. You are never to simply list answers to considerations. Repeat step 2 three times and average the times together. When does the ball have the most kinetic energy? - Treatment, Effects & Withdrawal Symptoms, What Is Nicotine? Write the goal of the lab or the question you tried to answer. We wrote down our data to prove that speed, height, and mass affect kinetic energy. When the standard cart reached the plunger cart they collided, stuck together, and continued down the track with a new velocity. One you have found this distance, focus more carefully on this position so that you can take a measurement from the edge of the table to the position where the duck initially contacted the ground. Overall the total energy (kinetic plus potential) is conserved. 3. 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. Upon graphing the data, the best fit line was identified in order to find the formula of the function. This will serve as a backstop for launching the duck. This rod would be used to break the photon beam in the Photogate sensor, and send a signal to the computer. web feb 7 2023 edgenuity chemistry lab report answers title the title should be concise and clearly describe the purpose of the experiment. If your time is greater than it's supposed to be, your results won't make sense. She has a Master's Degree in Cellular and Molecular Physiology from Tufts Medical School and a Master's of Teaching from Simmons College. These values were recorded, and the procedure was repeated five additional times for a total of six readings. A rescue diver of mass 89 kg jumps from a hovering helicopter into the ocean 20 meters below. Later, one piece of rock is dropped from different heights and hole made measured. cup, allow the reading to stabilize. The final condition tested was explosions. in the water. Ionic bonding is a type of chemical bond formed between two ions with opposite charges. Record the equilibrium temperature in Table B. - Benefits, Foods & Deficiency Symptoms, Working Scholars Bringing Tuition-Free College to the Community, Investigate conservation of energy through measuring potential and kinetic energy. a. This taught the very important concept of the conservation of momentum. In each calculation below the initial momentum is calculated using the following formula. These results are shown in the table below. kinetic energy lab questions. Why or why not. Explain your answers. Kinetic Energy Lab Report Edgenuity Answers. This includes knowing the displacement, velocity, and acceleration of objects. The kinetic energy before and after the system was then computed using the following equation. b. Swirl the thermometer slightly, and confirm that the thermometer is well within the water. The initial velocity of the standard cart and the final velocity of the plunger cart were the readings from the first and second Photogate sensors, respectively, on the Logger Proprogram. Describe the three different types of bonds, providing examples of molecules formed through each type of bond. QUESTION: How do mass and the type of material affect thermal energy transfer? This proved that momentum is in fact conserved. This is true because the value of the ratio of the momentum after to the momentum before was relatively close to one, or zero in the case of the percent difference for the momentum of the explosions. 3. m 1 < m 2 If m 1 < m 2, then v 1f < 0, which is to say that object 1 reverses direction. Find the values of (a) I2I_2I2, (b) I3I_3I3, and (c) R3R_3R3. This was a result of miscommunication between group members that proceed to affect why the group had the lowest measurement of displacement. ,&xZxH|4"z$/Ku%|*62817t>|f'JMnPu/n_zrf~!)r^Vv<3#il4ZI[iiR!hri.#)DnnSpaFKz?WIVFRE7d/~ q|d. These ions attract each other and create an ionic bond. descriptions of the heat gained by water, wet sand, and dry sand that you have made by Place the lid on the calorimeter, and insert the thermometer. Aqueous solutions of ionic substances will be experimented with in this Ionic Reactions lab. If you do not have . The raw data for the explosions is shown below. (c) The balls will move to the right because v1>v2v_1>v_2v1>v2 before the collision. a. Repeat Step 3a for the 200 g samples. Step 1: Gather materials. Repeat the process of data collection at least 5 times and take the average. 3. They have opposite properties and have the ability to cancel or neutralize each other. Explain your reasoning: Which samples will heat up faster? Energy is transferred through vibrating particles of . This is most likely because the reading of the return bounce was not exactly correct and neither was the drop height. One cart was a standard cart with a rod on top. at a height of 10 cm from the materials. stream circle one The nonconservative work is the _________________________, Conservation of change in kinetic energy formula, Lab 9: Centripetal Force & Rotational Dynamics, Mathematical Methods in the Physical Sciences. I recommend using this template. /Filter /FlateDecode - Determine the energies involved for a free falling body The term Kinetic means an object in motion A Static object is one that is at rest (not moving). Click the Get form key to open the document and move to editing. The carts were placed on the track so that the Velcro side of each cart was facing the other. 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. Heat Transfer - The movement of thermal energy from one object to another of a different temperature. 3. These results are shown in the table below. Momentum cannot be lost in a collision. 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. 2. bundle of steel wire. pellets, and briefly allow the excess water to drain from the pellets and strainer before B is a filter feeder or a detritivore. endobj One atom borrows one or more electrons from another atom. The fact that the kinetic energy ratio was very close to one shows that the kinetic energy is conserved in elastic collisions. The standard cart moved to a velocity of zero and was still. The mass was determined by weighing the spheres on the Analytical Scale and Triple Beam Balance Scale. Using the kinetic energy equation. Because the percent differences were relatively close to zero the momentum of the system was conserved. Simply put, his law describes the relationship between the mass of an object, the acceleration of an object, and the force needed to move it. in comparison to white Americans? If you have access to a supervised laboratory, do Part A. After these values were calculated the ratio of the final kinetic energy to the initial kinetic energy was calculated in order to compare the values. The cell membrane functions to protect a cell and to regulate the movement of molecules and ions into and out of cells. % When you are finished, submit this assignment to your teacher by the due date for full credit. Consider the circuit in the diagram. Record this in your notebook. The kinetic energy before and after the system was then computed using the above kinetic energy equation.

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