Unit 5

Newtons First Law (stops because of friction

We continued our learning on unit 5 and force today. We learned the three newton laws and experimented with examples of all of them.
Newton laws
1) Objects in motion or at rest will tend to stay in motion or at rest unless acted upon by an outside unbalanced force.
2. The acceleration of an object is directly proportional to the net force on an object which the acceleration of an object is inversely proportional to an objects mass. (Fnet=sum of all forces in the axis)
3. For every force or action there is an equal and opposite force or reaction, equal in magnitude, opposite in direction.

Newtons Second Law ^ (Testing Weight/Normal force)

We did a few experiments to test each law. For the first law we learned that when we push objects, they stop moving eventually because of friction. For the second law we learned that bathroom scales measure your normal force and that normal= perpendicular to the ground. For the third law we learned that when two things collide they have the same amount of force inflicted on the two objects no matter the mass or size. In our spring scale lab we also concluded that mass and gravitational force is direct; when mass increases so does the gravitational force.

We also continued to learn about vector problems. We had to use trig to figure out some values. For these equations we have to know that the x direction values always equal each other, and the y direction values always add up. Frictional force is a force that opposes force or impends force.

Newtons Third Law (We have equal forces)