Consider the process shown in (Figure 1). Suppose E =2 J. Part A What is the final kinetic energy of the system for the process shown in the figure? Express your answer with the appropriate units. ? K = Value Units Figure Submit Request Answer 1 of 1 < Return to Assignment Provide Feedback E (J) 4E, 3E, 2E, E K, + U+ Wet = K, + U, + AE, %3D
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- Two objects of different mass start from rest and are pulled horizontally with negligible friction by the same magnitude net force and moved through the same distance. The work done on object 1 is 4000 joules. After the force has pulled each object, object 1 is seen to move with half the speed of object 2. Answer the following questions and show your work. a. How much work is done on object 2? What is the kinetic energy of object 1 after being pulled? Explain. b. What is the kinetic energy of object 2 after being pulled? Explain. с.Figure Energy (J) 4- 3 2 1 0- -1 -2 + K₁ + U₁ + W ext = K₁ + Uf + AEth 1 of 1A ball weighing 0.2 kg rolls along the ground. It has a speed of 3 m/s. (Eventually, it rolls up the hill shown below) a. Calculate the total energy of the ball. Show your work. b. At its highest point on the hill, the ball as at a height of 0.1 m above the ground. Is energy conserved for the ball? Either way, explain how you know.
- Hand not in system K, + Ug, + U + W - K, + Ug,+ Uy + AEstem !3! 5. The cart starts at rest but is moving rapidly when released by the hand, and is about to crush a piec of chalk. Energy Conservation Equation Initial Hands aot in system K; + g, W - K; + Ug,* + AEgerm Final Bottom of bex and carpet are warmer.- 6. A person, not in the system, drags a heavy box across a level floor. Energy Conservation EquationTwo objects of different mass start from rest and are pulled horizontally with negligible friction by the same magnitude net force and moved through the same distance. The work done on object 1 is 4000 joules. After the force has pulled each object, object 1 is seen to move with half the speed of object 2. Answer the following questions and show your work. a. How much work is done on object 2? b. What is the kinetic energy of object 1 after being pulled? Explain. C. What is the kinetic energy of object 2 after being pulled? Explain. d. What is the ratio of the mass of object 1 to the mass of object 2? Explain and show work.at a glance S Add-ons Help Last edit was 16 minutes ago Arial BIUA CD 国 12 LE2 2. At the Yankee stadium Alex Rodiguez scores a home run against the Miami Dolphins ,by hitting the 0.015kg baseball with a bat causing the ball to increase its velocity from 0m/s to 50m/s. a Is the work done on the baseball positive or negative ? b. How would you determine the work done by Alex on the baseball 2
- Part A A0.60 kg book slides on a horizontal table, The kinetic friction force on the book has magnitude 1.1 N. How much work is done on the book by friction during a displacement of 3.4 m to the left? Express your answer with the appropriate units. HẢ W = Value Units Submit Previous Answers Request Answer X Incorrect; Try Again; 3 attempts remaining Part B The book now slides 3.4 m to the right, returning to its starting point. During this second 3.4 m displacement, how much work is done on the book by friction? Expre your nswer with the appropria eunits. Ii HẢ W2 = Value Units Submit Request Answer Part CPlease answer fast1 A block is placed on an elevator platform that moves downward with decreasing speed. Consider the time interval At, in which the speed of the platform changes from v, to zero. Decreasing speed (from v, to zero) Block a. In the space provided, sketch a free-body diagram for the block. b. Is the net work done on the block positive, negative, or zero? Platform For each force on the free-body diagram, state whether the work done on the block by that force is positive, negative, or zero. Explain. Free-body diagram for block Rank the works you identified above in order of decreasing absolute value. Explain. c. Consider reference frame R, moving downward with constant speed v.. In reference frame R: Direction of acceleration Direction of i. In the spaces provided, draw arrows to indicate the direction of the velocity and the acceleration of the block in reference frame R during the interval At,. Explain. velocity of block of block ii. In reference frame R: • is the block speeding up,…
- A factory worker pushes a 34.0 kg crate a distance of 6.0 m along a level floor at constant velocity by pushing horizontally on it. The coefficient of kinetic friction between the crate and floor is 0.24. You do not have to show your work.Please draw an LOL diagram. I gave an example of it.7. The cart, in the diagram below, travels .80 m down the ramp with uniform acceleration in 1.5 seconds. The initial velocity(v.) is 0 m/s. You must show work. Determine the following. If answer requires a calculation, you must show work. The initial velocity(v.) is 0 m/s. a. Average Velocity b. Acceleration c. The dots in the strips below represent the position of the cart as it rolls down the .80- meter-long ramp. The time intervals between the dots are equal. Which of the strips best represents the motion of the cart down the ramp? Justify your choice. d. Which two strips represent an object moving at constant velocity? Justify your answer.