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Grade
10/10

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An object's motion will not change unless an unbalanced force changes it. For example, an object at rest will stay at rest until an unbalanced force moves it, and an object in motion will keep moving at the same velocity until an unbalanced force changes it.

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When objects are at rest it means they are not moving. The objects in this picture are at rest. They are not moving. They will stay at rest until an unbalanced force acts upon it.

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When an object is in motion, it

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When forces are unbalanced, they have a net force of more than 0 N. This means that the object will be in motion. In the tablecloth activity there were unbalanced forces. When I yanked the tablecloth, there were unbalanced forces.

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When forces are balanced they have a net force of 0 N. This means that there will be no motion. To set up the hoop and marker activity, we had to balance the hoop and marker on top of the bottle so that they wouldn't move.

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The tendency of an object to resist change in movement. In the hoop and marker activity, the marker moved with the hoop a little when I pulled it away.. It was resisting change.

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A measure of inertia. A smaller mass means smaller inertia, and a larger mass means a larger inertia. In the tablecloth activity, some objects had more mass than others. for example, the plate was heavier than the spoon.

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A force is a push or pull. This was seen in the hoop and bottle activity when the hoop was pulled off of the bottle. The hoop and marker stayed at rest until the force of the pull acted upon them.