Wet sand 200 20 37 16. If students have difficulties differentiating the characteristics associated with covalent and ionic bonding, they will suffer with future topics and other branches of chemistry. 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. Which samples will heat up faster? 5) 5 mL of sugar was added to the solution and a balloon was placed over the opening of the bottle to minimize the loss of any gas from the system. A rod was used to push down the button on top of the plunger cart. of tape at these points to serve as targets. Momentum (p) can be calculated by multiplying mass (m) by velocity (v) in the following equation. 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. 3. Kinetic Energy Practice Problems 1. Measure out 500 mL of tap water in the 1 L beaker and bring it to a boil using a hot plate Endnotes: Kinetic Energy Lab Report Speed, height, and mass do affect kinetic energy. b. Considerations: These are not questions to be answered as a separate part of the lab report. complete other steps of the lab. Get your timer ready and prepare to drop the ball. If you have access to a supervised laboratory, do Part A. in Table A. pellets, and briefly allow the excess water to drain from the pellets and strainer before The Photogate sensors were used to measure the velocity of each cart as it moved from the explosion site. These sensors were attached to a computer, which was running the Logger, program, through a Vernier computer interface. You might think there is no friction in the air, but air is actually made up of millions of tiny gas molecules. Dm is preferable! The first step was to graph the distance-time graph from the data collected. information about whether it In physics momentum is always conserved. Also! d. Remove the aluminum wire sample and empty the calorimeter. Try to let The word dichotomous comes from two Greek words that translate to "divided in two parts. This is most likely because the reading of the return bounce was not exactly correct and neither was the drop height. Cross), Forecasting, Time Series, and Regression (Richard T. O'Connell; Anne B. Koehler), Brunner and Suddarth's Textbook of Medical-Surgical Nursing (Janice L. Hinkle; Kerry H. Cheever), Principles of Environmental Science (William P. Cunningham; Mary Ann Cunningham), Psychology (David G. Myers; C. Nathan DeWall), The Methodology of the Social Sciences (Max Weber), Biological Science (Freeman Scott; Quillin Kim; Allison Lizabeth), Give Me Liberty! Enrolling in a course lets you earn progress by passing quizzes and exams. The purpose of this lab is to test substances and to determine the physical and chemical properties of substances. Dry sand 200 19 40 21. 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). c. The three material types should be room temperature, but place a thermometer in each QUESTION: How do mass and the type of material affect thermal energy transfer? ANSWER KEY . The next condition tested was inelastic collisions. then place a thermometer in each cup and observe the readings until they do not climb However, when the group was compared to other groups conducting the same experiment, the displacement of their marshmallow was the shortest. H. Assemble a coffee cup calorimeter. a. Record this initial temperature for the three metal samples in Table B. >> Record the exact mass in Table B. 1. 124 lessons. This was a result of miscommunication between group members that proceed to affect why the group had the lowest measurement of displacement. Not because your TA says to do so, but because it adds depth to your discussion. Within some problem domain, the amount of energy remains constant and energy is neither created nor destroyed. The energy of a moving object is called kinetic energy. a. f. Make a hypothesis about which set of sample mass, the 200 g or 100 g, will heat up the Temperature is a measure of the internal energy of a system. ,&xZxH|4"z$/Ku%|*62817t>|f'JMnPu/n_zrf~!)r^Vv<3#il4ZI[iiR!hri.#)DnnSpaFKz?WIVFRE7d/~ q|d. Because the percent differences were relatively close to zero the momentum of the system was conserved. Two carts, that had already been weighed, were placed in the track. Whenever an object moves, some energy is converted to heat through friction. After the time has elapsed, record the actual elapsed time in the Tfinal column in Table A. This is because of the law of conservation of momentum. Later, one piece of rock is dropped from different heights and hole made measured. - Uses, Types, Examples & Side Effects, What Is Methadone? One atom borrows one or more electrons from another atom. Using your data in Table B, calculate Twater and Tmetal , using Teq and Ti for each metal Lab: Kinetic Energy Assignment: Lab Report 1 See answer Advertisement zlskfrum Answer: Explanation: In this lab, two pieces of rock, one big one small, are dropped from the same height onto mud. The final momentum for each condition was calculated using the following formula. As well as identify how accelerations affects an object's velocity and time. in Table B. endobj Physics Lab - Work & Kinetic Energy (uses Science Workshop TM Interface) Purpose: The purpose of this lab is to compare the work done on an object with the object's change in kinetic energy. Table A: The Effect of Mass or Material Type on Thermal Energy Transfer. Accuracy is how close the average of the measured values are to the actual value. However, the analysis of kinetic energies proved that kinetic energy is not always conserved. Science | Graded Assignment | Lab Report | Elasticity Name: Keli Parks Date: 8/14/2022 Graded Assignment Lab Report: Elasticity Answer the questions below. 4 0 obj %PDF-1.5 If you want the answer key, you can dm me or you can comment so it'll . In this lab, we'll be studying the principle of conservation of energy. Aqueous solutions are solutions that water is solvent. of wire and water reach an equilibrium temperature (the water temperature stops v . Attached to the track were two Photogate sensors. The Photogate sensors were used to measure the velocity of each cart as it moved from the explosion site. Hydrogen bond, water. When does the ball have the most kinetic energy? Call down to your partner when you're going to drop the ball and let them use the timer. This will serve as a backstop for launching the duck. The volume is determined by measuring with a ruler and by water displacement. The equation for GPE is mass multiplied by acceleration due to gravity, multiplied by height: Acceleration due to gravity is always 9.8m/s2; however, it is acceptable to round this to 10m/s2 for easier calculating. Newton's second law says: Force equals mass times acceleration (F= m x a). These results are shown in the table below. Open Edgenuity and enter the purchase key. 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. 498 0 obj <>stream The kinetic energy before and after the system was then computed using the following equation. Record the equilibrium temperature in Table B. copyright 2003-2023 Study.com. Measure the mass of your ball on the balance. d. Repeat Steps 4bc for 50 g of the steel wire. The major finding was the return bounce height depended the most on the balls mass and from where it was dropped. 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. Add water to the cup until the total mass reads 200 g. Repeat The conservation of the energy is happening in the presence of conservative forces like gravitational forces or the _____________. Understanding of DG =G 2-G 1, the driving force A thermodynamically favorable reaction or process means DG < 0, that's to say, highly driven! In the equation, 404.289cm/s^2(t) represents the slope of the parabolic curve pertaining to the distance(cm) over time(sec) as the 4.876cm displays the y-intercept in which the function crosses the axis leading to the resulting curve. Assume that the velocity of the soda bottle falling from a height of 0.8 m will, be 4 m/s. The first condition tested was elastic collisions. After the lab was over this data was analyzed using the equations above to give the following values. In inelastic collisions kinetic energy was not conserved because the value of the ratio of initial and final kinetic energy was not close to one. All objects have momentum, even if it is zero, and momentum cannot be lost. Use tongs to carefully place the sample in the hot water bath. increasing). Acceleration is an objects increase in velocity. Explore different tracks and view the kinetic energy, potential energy and friction as she moves. Energy is transferred through vibrating particles of . The first Photogate sensor measured the velocity of the standard cart, and the second Photogate sensor measured the velocity of the plunger cart. If the speed of the object increases, its kinetic energy increases. in comparison to white Americans? This change of energy is known as the. 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. If you have been keeping score of your answers, you can always dm me the link and I'll add it to the Google Drive Edgenuity Files. (Read Section 7 -3 for a thorough explanation of the W ork-Kinetic Energy Theorem.) % - h is the maximum height of the object relative to the level of reference chosen. A rescue diver of mass 89 kg jumps from a hovering helicopter into the ocean 20 meters below. Write the goal of the lab or the question you tried to answer. The carts were placed on the track so that the magnet containing ends of the carts were facing each other. circle one What was determined to be true was that the structure that contained the right configuration in producing a high amount of force proved to have the greater amount of displacement of the marshmallow. Justify the hypothesis from a chemical standpoint. Visit EdgePlus+ for a purchase key. This lab taught how to do calculations for multiple situations that involve momentum. If you measure it in grams, simply divide the number by 1000 to get kilograms. To answer this question, you really have to think about the moving atoms and molecules as having energy. Using the kinetic energy equation. Therefor all the momentum from the object that is initially moving will be transferred to the other object. It goes from 414.2 kilometers per hour (kph) to 0 kph in 2.8 seconds. Ionic bonds form their bond when opposite charged ions in a chemical compound have an electrostatic attraction. Now find KE. She is also certified in secondary special education, biology, and physics in Massachusetts. If you do not have . Although there will be less friction than sliding it across a rough table, it's still there. I made this because I was having to do all the research and I would've loved it, if someone had already done this. Think about what you already know about energy. Total score: ____ of 27 points (Score for Question 1: ___ of 3 points) 1. Suggested Answers 1. 10 mL graduated cylinder - 2 g sodium chloride spoon - 2 g sodium bicarbonate conductivity apparatus distilled water in a wash bottle. If this wasn't your finding and GPE was greater, you might have some errors in your timing for dropping the ball. (b) The balls will move to the left because p2>p1p_2>p_1p2>p1 before the collision. They then continue on together with one final velocity. Once you have created your file (s) and are Q&A A rescue diver of mass 89 kg jumps from a hovering helicopter into the ocean 20 meters below. Explain your answers. This would force the carts to repel each other and not stick together during collision. The Logger Proprogram was set up so that it would collect the Gate Time from each Photogate sensor. The law of conservation of energy is a universal principle that says that the total energy of a system always remains constant. In this lab two carts will undergo elastic collisions, inelastic collisions, and explosions on a Vernier Dynamic Track. Place a beanbag so it is centered on one end of the board at the target. Upon graphing the data, the best fit line was identified in order to find the formula of the function. K. Transfer metal samples to the calorimeter and measure the temperature change. Learn about conservation of energy with a skater gal! 2 0 obj These values were recorded, and the procedure was repeated two more times for a total of three readings. We can say that one form of energy (potential energy) is converted in another form of energy (kinetic energy). There were no controlled variables used in this experiment. The initial velocity of the standard cart and the final velocity of both carts, moving together as one, were measured using the Photogate sensors. Set up samples to examine thermal energy transfer with varying material and mass. calorimeter into a beaker or other secondary container to prevent wobbling. Record the final temperature value for each cup in Table A. D. They have opposite properties and have the ability to cancel or neutralize each other. You may continue with Part II until it is time to check compact mass. any higher. Find the values of (a) I2I_2I2, (b) I3I_3I3, and (c) R3R_3R3. for the other two cups, filling one with 200 g of wet sand and one with 200 g of dry sand. This would give the velocity of each cart. These results are shown in the table below. The Just Drop It investigation was very informative and taught important lessons. In the presence of nonconservative forces (like friction), the _____________ is not conserved. This includes knowing the displacement, velocity, and acceleration of objects. In your observations, include qualitative These resources will help you complete the assignment. The final condition tested was explosions. Raise the thermometer and lid off the calorimeter, and carefully transfer the bundle of h.wTU#5SQ-fr"hul,h1,fXE1"Z3Z|6@'ru` 9Zpt%2{F&Q"N#/{]B; y&p*.0~A!mGTFeOnHtH_\02w4r7D\x/heDz0*q[P. What are the units for kinetic energy? with 300 mL of room temperature, add water to the calorimeter until you read 300 g of The cue ball strikes the billiards ball and loses velocity after the collision occurs and the billiards ball gains velocity after the collision. 6. Which answer correctly explains how the balls will move after a totally inelastic collision? Double-click the bottle of NaHCO3 to move it to the Stockroom counter. The energy stored in an object while at rest in a gravitational field. c. Observe the increase in temperature every 20 seconds for 3 minutes, or until the bundle The initial velocity of the standard cart and the final velocity of both carts, moving together as one, were measured using the Photogate sensors. web feb 7 2023 edgenuity chemistry lab report answers title the title should be concise and clearly describe the purpose of the experiment. 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. L. Step 2: Note State and Appearance. Apply the properties of kinetic and potential energy. 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. When the standard cart reached the plunger cart they collided, but did not stick together, and the plunger cart moved down the track. Repeat the process of data collection at least 5 times and take the average. a. One cart was a standard cart with a rod on top. Draw a circle, an X, or place a piece. Time can vary slightly as needed to The analysis of. Inquiry Lab Kinetic Energy and Motion Read the entire activity on pages 180 and 181 of the textbook. e. Measure out approximately 50 g of lead pellets, record the exact mass in Table B, and To begin the lab a Vernier Dynamic Track was set up and leveled on a table. It should be least 4 meters so that you can measure the time easily. At the maximum height h, the object's GPE will be a _______. Understand the role of the mass in a conservation of energy situation. 1. lab kinetic energy edgenuity answers. As the data is representative of a graphical parabola, a parabolic function was utilized to be the best fit trendline. What is its volume at s.t.p.? bundle of steel wire. Lab Handout Lab 13. Coil the wire 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. SOLUTION: Kinetic Energy Student Guide Lab Report - Studypool Then you can change the height of by adding a .75m desk on top of the .95m table. Two clay balls are moving toward each other. As the height decreases the GPE will decrease while its __________ increases. Ionic bond, table salt. This experiment will be exploring, in depth, Newton's second law.