Law of inertia
An object a rest will reamin at rest or an object in motion will remain in motion unless an unbalanced force acts on it.
Station 4
- When two forces cancel each other out there is no net force. This makes the object stay where it is. It doesn't move.
- The object will not move until the one of the forces becomes unbalanced and pushes/pulls on the object less or harder than the other force.
ex:
- When a marble rolls across the floor it will eventually come to a stop.
- When you slide across the floor you will eventually stop.
Station 1
Without Rubber Band: The penny flew forward off of the car when the car crashed.
With Rubber Band: The penny stayed on the car when the car crashed because it was kept in place by the rubber band.
This activity models Newton's first law of motion by showing that while the penny is on the car without the rubber band, there is nothing to balance out the force of the impact. When the rubber band is on the penny it holds the penny in by applying a force directly to it and cancels out the force of the impact.
With Rubber Band: The penny stayed on the car when the car crashed because it was kept in place by the rubber band.
This activity models Newton's first law of motion by showing that while the penny is on the car without the rubber band, there is nothing to balance out the force of the impact. When the rubber band is on the penny it holds the penny in by applying a force directly to it and cancels out the force of the impact.
Station 2
This activity models newtons law by showing that when the penny is on the paper, the paper is canceling out the force of gravity. but as soon as you slide the paper out, gravity becomes stronger and pulls the penny down into the cup. Same with the elbow.
Station 3
Initial high reading:70g
Steady speed reading: 50g
With Sandpaper:
Initial High Reading: 300g
Steady Speed Reading: 150g
This activity models Newtons law by showing that more force has to be applied when there is more friction acting upon the object. The sandpaper adds more force on the object canceling out the force of our pull until we put more force which would be an unbalanced force.
Steady speed reading: 50g
With Sandpaper:
Initial High Reading: 300g
Steady Speed Reading: 150g
This activity models Newtons law by showing that more force has to be applied when there is more friction acting upon the object. The sandpaper adds more force on the object canceling out the force of our pull until we put more force which would be an unbalanced force.