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Composition Setup

Deck of Cards
idbigdeck
Card
labelPart A

Part A

Excerpt

A person pushes a box of mass 15 kg along a smooth floor by applying a perfectly horizontal force F.

The box accelerates horizontally at a rate of 2.0 m/s2. What is the magnitude of F?

Solution

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idsysa
System:
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idsysa

Box as .

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idinta
Interactions:
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idinta

External influences from the person (applied force) the earth (gravity) and the floor (normal force).

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idmoda
Model:
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idmoda

.

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idappa
Approach:

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idappa
Card
labelPart B

Part B

A person pushes a box of mass 15 kg along a smooth floor by applying a perfectly horizontal force F. The box moves horizontally at a constant speed of 2.0 m/s in the direction of the person's applied force. What is the magnitude of F?

Solution

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idsysb
System, Interactions and Model:
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idsysb

As in Part A.

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idappb
Approach:

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idappb