Today we learned the other two laws of motion. We learned the law of acceleration: the acceleration of an object is directly proportional to the net force of an object, but is inversely proportional to the mass of the object, and the law of action-reaction which is: For every force (action), there is equal and opposite force (reaction). Equal in magnitude, opposite in direction. Basically the first law I stated, the law of acceleration means that the more mass and object has, the less it accelerates and vice versa. The second of Newton's law I stated, the action-reaction law, pretty much means that there is always an equal amount of force pushing or pulling wither way.
We also learned that a frictional force is a force that impose motion or impending motion. The picture above demonstrates someone about to push the air hockey puck thing (I don't know what to call it). The air hockey puck has a fan underneath so that it is "hovering" above the ground, which decreases friction allowing the air hockey puck to accelerate for a longer distance. The picture below is another example of taking away friction. First, someone tried to go down the dry slip n slide and barely moved, then we added water and it was easier, but when we added soap and water it was very slippery.
We also learned how to draw force diagrams, calculate angled force or tension using the "bureku" technique and trigonometry, and to determine whether forces were balanced or unbalanced. A newton is a unit for weight and is equivalent to Kg x m/s^2 or mass x acceleration of gravity. A good thing to remember is that normals means perpendicular to the surface.
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