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Public Release Item
Selected Response Item for Grade 8
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Standard 5.0 Physics |
Topic A. Mechanics
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Indicator 2. Identify and relate formal ideas (Newton's Laws) about the interaction of force and motion to real world experiences. |
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Objective b. Demonstrate and explain, through a variety of examples, that moving objects will stay in motion at the same speed and in the same direction unless acted on by an unbalanced force.
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Use the information below to answer the following.
A group of students investigated physics concepts at an ice-skating rink. The students skated at different speeds and pushed boxes across the ice. The boxes were exactly the same except for their mass.
What type of force causes an ice skater to begin to move?
- balanced
- gravitational
- magnetic
- unbalanced
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| Correct Answer |
| D. unbalanced |
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