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Grade
10/10

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Balance is when an object has two acting forces with an equal force in both directions. Balance was demonstrated when the marker was placed on top of the hoop which was balanced on the top of the glass jar. This relates to Newton's first law, because when the marker and hoop are balanced they are in rest. And when an object is in rest it stays in rest.

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An unbalanced force is a force that causes a change in the motion of an object. This was seen in the hoop an ring activity. It was seen when the hoop was hit. This caused an unbalanced force, because when the hoop is hit it overcome the stationary inertia of the marker. Inertia occurs when an object resists a change in motion. So if the hoop getting hit overcomes the stationary inertia then it had to have been acted upon by an unbalanced force. This connects to newtons first law, because an object at rest will stay at rest unless acted on by an unbalanced force. The marker would have stayed at rest if the hoop was not hit.

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Inertia is when a object resists a change in motion. Inertia was seen in the hoop and marker activity. It was seen when gravity over came the resting inertia which moved the marker straight down. This connects to Newton's first law because when the hoop is hit the resting inertia changes. This creates an unbalanced force. So the marker that is in rest does not stay in rest, because another force has acted upon it.

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When an object is at rest it is stationary/ not moving. This was seen in in the tablecloth magic activity. It was seen in the beginning of the tablecloth activity when the materials were laid out. They were at rest, because and remained in the same position. This connects to newtons law, because an object in rest will stay in rest. So since the materials are in rest they will stay at rest unless they are acted on by an unbalanced force.

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Motion is the change of position of an object over time. Motion was shown in the hoop and marker activity. It was seen when the hoop was hit and the marker fell down into the glass jar. This relates to Newton's fist law because  when an unbalanced force hits an object it changes the velocity which changes the motion of the object. In this case the motion did not change until it hit the bottom of the glass jar. This put an end to the motion. Which means the unbalanced force that the marker was hit by was the jar.

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Mass is the amount of matter in an object which is weight. Mass was seen in the tablecloth magic activity. This trick worked because the mass of the table cloth was less than the materials. If a tablecloth with a bigger mass was used the friction would increase which would drag the objects with the tablecloth. With a light weight tablecloth used the force of friction is small, so the items on the tablecloth don't move. This connects to Newton's first law because the amount of mass an object has determines the resistance to a change in motion. A greater mass has a greater tendency to resist a change in motion. While a smaller mass is likely to resist the change in motion less.

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Newton's first law of physics says that; on object at rest will stay in rest, because it can't move without a unbalanced force pushing or pulling the object. The second part of Newton's law says; an object in motion will stay in motion unless acted upon by another unbalanced force. This means an object will continue to move in the same direction and speed and it wont change without an unbalanced force acting on the object.

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Force is a push or pull in a given direction. Force was seen in the tablecloth magic activity. It was seen/used when the tablecloth was pulled form beneath the materials on top. The pull was our hands and the push would be the friction, because it is holding the materials in place instead of the materials following the path of the tablecloth. This connects to Newton's law because in order for this trick to work, force has to be emitted otherwise the object would continue to be at rest.