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Grade
10/10

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Newton's First Law states that an object that is not in motion, will continue to be at rest. It also states that an object that is in motion will continue to be in motion at the same velocity, unless an unbalanced force acts on it.

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If something is acted on by a balanced force, it will not be in motion because forces are equal. During the marker and jar activity, the embroidery hoop was being acted on by balanced forces, the marker and gravity on top, and the jar on the bottom.

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When an object is acted on by an unbalanced force, it will be in motion. Unbalanced forces create motion. When the embroidery hoop was taken out from under the marker, there was no force pushing up on it, and gravity was pushing down. That would be an unbalanced force, and it created motion because the marker fell. (Hopefully in the jar)

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Force is how many N's are acting on an object, Net force is the total N's acting on an object. In the hoop and marker, the embroidery hoop had a force acting on top (marker+gravity) and a force on the bottom, (jar)

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Inertia is the property of objects to resist their change in motion. This was seen in the magic table cloth activity because even though the table cloth was in motion, the things on top of it stayed in place, given that it was done correctly.

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An object that is moving is in motion, it will continue with the same velocity until acted on by an unbalanced force. In the hoop and marker, when the embroidery hoop was pulled out, the marker fell until it hit the bottom of the jar.

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An object that is not moving is at rest. It will stay at rest until an unbalanced force acts on it. In the hoop and marker trick, the marker, hoop, and jar were at rest until the embroidery hoop was pulled out.

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Mass is a measure of inertia. Smaller items have less mass, which means they will have less inertia. In the table cloth magic, the small beaker that didn't weigh much fell down more than anything else when the table cloth was pulled.