A roller coaster (356 kg) moves from A (5.58 m above the ground) to B (21.3 m above the ground). Two non-conservative forces are present: friction does -2.05 x 104 J of work on the car, and a chain mechanism does +4.00 x 104 J of work to help the car up a long climb. What is the change in the car's kinetic energy KE - KE, from A to B? Number i Units

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Chapter7: Work, Energy, And Energy Resources
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A roller coaster (356 kg) moves from A (5.58 m above the ground) to B (21.3 m above the ground). Two non-conservative forces are
present: friction does -2.05 x 104 J of work on the car, and a chain mechanism does +4.00 x 104 J of work to help the car up a long
climb. What is the change in the car's kinetic energy KE₁ - KE from A to B?
Number i
Units
Transcribed Image Text:A roller coaster (356 kg) moves from A (5.58 m above the ground) to B (21.3 m above the ground). Two non-conservative forces are present: friction does -2.05 x 104 J of work on the car, and a chain mechanism does +4.00 x 104 J of work to help the car up a long climb. What is the change in the car's kinetic energy KE₁ - KE from A to B? Number i Units
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