2.A 3.00 kg object is initially at rest on a horizontal surface. An applied force acts on the object in the +x-direction. Assume there is friction in the system as well. The Net Work done on the object is 50.0 J over a distance of 7.00 m. a) What is the object's Change in Kinetic Energy? Do Not Overthink this!

2.A 3.00 kg object is initially at rest on a horizontal surface. An applied force acts on the object in the +x-direction. Assume there is friction in the system as well. The Net Work done on the object is 50.0 J over a distance of 7.00 m. a) What is the object's Change in Kinetic Energy? Do Not Overthink this!

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter9: Energy In Nonisolated Systems

Section: Chapter Questions

Problem 25PQ: An object of mass m = 5.8 kg moves under the influence of one force. That force causes the object to...

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Instantaneous Power

Power is defined in physics as the amount of energy transmitted or transformed per unit time. The watt is the unit of electricity in the International System of Units, equivalent to one joule per second.

Question

c) What is the speed of the object after moving 7.00 m, starting from rest?
d) If the coefficient of kinetic friction was 0.750, what must the magnitude of the applied
force be?
4
11

2. A 3.00 kg object is initially at rest on a horizontal surface. An applied force acts on the
object in the +x-direction. Assume there is friction in the system as well. The Net Work
done on the object is 50.0 J over a distance of 7.00 m.
a) What is the object's Change in Kinetic Energy? Do Not Overthink this!
b) What Net Force acted on this object?

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Step 1: Determine the given data:

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Step 2: a) Calculate objects change in kinetic energy:

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Step 3: b) Calculate the net force:

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Step 4: c) Calculate the speed of the object:

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Step 5: d) Calculate the applied force:

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