Final Exam Page 1 of 20 Page 1: 1 Page 2: 2 Page 3: I w Page 4: Previous Page Question 1 (1 point) Next Page A 2.1 Kg ball is trough upward with an initial speed of 6.2 m/s (neglect air resistance). Determine the kinetic energy of the ball at its highest point. a) 20 J b) 13 J ○ c) 0 J d) 81 J Page 5: e) 6.2 J 5 f) 40 J Page 6: Honorlock Browser Guard™ Q Previous Page Next Page Page 1 of 20 Calculator Guidelines Webcam SO MacBook Air W E R T D F A މ Minimi

Final Exam Page 1 of 20 Page 1: 1 Page 2: 2 Page 3: I w Page 4: Previous Page Question 1 (1 point) Next Page A 2.1 Kg ball is trough upward with an initial speed of 6.2 m/s (neglect air resistance). Determine the kinetic energy of the ball at its highest point. a) 20 J b) 13 J ○ c) 0 J d) 81 J Page 5: e) 6.2 J 5 f) 40 J Page 6: Honorlock Browser Guard™ Q Previous Page Next Page Page 1 of 20 Calculator Guidelines Webcam SO MacBook Air W E R T D F A މ Minimi

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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4. Complete the following table using the information given and the figure below. A 5 kg ball is swinging back and forth on a string as shown. You may make the following assumptions: A is the highest point in the swing. The speed of the ball is 4.3 m/s at point B., and at this point it is at "ground level" The ball is 0.3 m above the "ground" at point C A B KE PE V 4.3 m/s A Footer Different first page Options
1.Using your measurements from Table 1, calculate the total kinetic energy of the two carts before collision for each trial (this is the initial kinetic energy, K). Show your calculations below and record your results in Table 2. 2. Using your measurements from Table 1, calculate the total kinetic energy of the two carts after collision for each trial (this is the final kinetic energy, Kʹ). Show your calculations below and record your results in Table 2. 3. Calculate the % change in kinetic energy during the collision for each trial. Show your calculations below and record your results in Table 2. % change = final − initia/ initial × 100 4.You will probably find that the total momentum changed slightly during each trial. Explain what might have caused the total momentum of your system to change during the collisions. 5.You should have found that the collision reduced the total kinetic energy of your system in each trial. Where did the kinetic energy lost during the collision go? In…
Kinetic Energy Addie Neal Tosprcing Greatmes NDEPENDENCE SCHOOL DISTRICT Practice Directions: Match the energy form(s) to the description provided. A few questions may have more than one answer. 1. Falling rocks from the top of a mountain (a) Mechanical- 2. Release of energy from the Sun (b) Electrical 3. Energy released from food after it is eaten (c) Heat 4. Batteries (d) Radiant 5. The energy that runs a refrigerator (e) Chemical 6. Nuclear fission reactors (f) Nuclear 7. The rumble of thunder from a storm (g) Sound 8. Rubbing your hands together 9. Gasoline 10. Food before it is eaten 11. Lightening
PROVIDE COMPLETE AND ORGANIZED SOLUTION, IF NECESSARY. INCLUDE UNITS IN THE SOLUTION & FINAL ANSWER. ENCLOSE FINAL ANSWERS IN BOXES 5. A man (on a coaster) slides down a roller coaster, starting from rest, from an initial height of 25 meters as shown in the figure below. The initial potential energy of the man(with the coaster) is 2.6 x 10° J. Assume there is no friction between the coaster and track. A. What is the initial KE of the system? B. What would be the KE of the system at point b? C. What is the KE of the system at point c? D. What is the Speed at point C?
KE = 2 mv2 Kinetic Energy Directions: Fill out everything for each problem. Write neatly! 1) A unicorn suddenly ran through the school at 5.6 m/s and it has a mass of 450 kg. What is the unicorn's kinetic energy?
DIRECTIONS: FILL IN THE BLANKS TO COMPLETE THE SOLUTION A falling package with a parachute is greatly affected by air resistance. Suppose a package (m = 25 kg), dropped from an altitude of y = 1500 m, hits the ground at a speed of v = 45 m/s. Calculate the work done by air resistance. By conservation of energy, the initial total mechanical energy is equal to the final total mechanical energy. Let K be the kinetic energy, U be the gravitational potential energy, and Wair be the work done by the drag force from air resistance. E1 = E2 K1 + U1 + Wair = K2 + U2 Some of the terms in the equation above are zero so it can be simplified to: ______ + Wair = ________ Isolating the work done by air resistance, we get: Wair = 1/2_____ - m_____ Plugging in the values given, the work done by air resistance is: Wair = _______kJ
Instructions 1. Write your complete solution for each item. It should be handwritten. 2. Make sure to simplify your answers and box/underline/highlight your final answer. A. Solve the following problems. 17F1 3.) The natural length of a spring is 8 inches. A force of 20 lb stretches the spring to 10 in. Find the work done in stretching the spring from its natural length to 12 in.
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7.6.2 Reason PIVOTAL Cass 1=1,2 m A pendulum consisting of a light string and an object (mass 2 kg) is released from a horizontal position and swings down (see the figure at right). Find the speed of the object when the pendulum reaches the bottom of its swing (as shown by the dashed lines in the figure) 23 using your knowledge of energy. Could you figure this out using kinematics? Why or why not?
at a glance SEM II Tools Add-ons Help Last edit was seconds ago text Arial 12 BIU +. 1 主主 Independent Practice: 1. The driver of a red sports car traveling with an Initial K.E. of 27,000J speeds up so that K.E. increases to 34,000 J. i) Determine the change in Kinetic Energy We = KE,-KE,- Det ii) Did the total work done add or take away energy from the car? Explain. The total work done Red sports car because
POTENTIAL & KINETIC ENERGIES WORKSHEET Show the work and include units in your final answer to get full credit. 1.What is the potential energy of a 0.85 kg book that is placed on a shelf that is 2.5 m high? 4.6.=3 M= 6, 85 kg h=2.5m = 6.85 kg x9.8 ms-2x25m 2. Calculate the potential energy of a 4.5 kg bowling ball that is on the ground. Assume that g = 9.8 m/s. M=4.5 4.6.m=D2 %3D 3. A 65 kg woman is running at a speed of 2.5 m/s. What is the woman's kinetic energy? 4. A 420 g soccer ball is kicked into the air with an initial velocity of 30 m/s. How much kinetic energy does the soccer ball have?
A Text Direction Arrangs Convert to SmartArt Styles Shape DiaRIng FilciHicd St A car and a truck have the same kinetic energy. Which one has a larger speed? * O (a) the car because it has a smaller mass O (b) the truck because its large mass makes its kinetic energy very large O (C) both have the same speed because their kinetic energies are the same (d) I have no idea 四