Physics+20-Dynamics-1-3

1. Explain the effects of balanced and unbalanced forces on velocity. A) Explain that a nonzero net force causes a change in velocity. B) Apply Newton’s first law of motion to explain, qualitatively, an object’s state of rest or uniform motion. C) Apply Newton’s second law of motion to explain, qualitatively, the relationships among net force, mass and acceleration D) Apply Newton’s third law of motion to explain, qualitatively, the interaction between two objects, recognizing that the two forces, equal in magnitude and opposite in direction, do not act on the same object. E) Explain, qualitatively and quantitatively, static and kinetic forces of friction acting on an object F) Calculate the resultant force, or its constituents, acting on an object by adding vector components graphically and algebraically G) Apply Newton’s laws of motion to solve, algebraically, linear motion in horizontal, vertical and inclined planes near Earth's surface, ignoring air resistance.

1. What would you include in the video, in order to clarify the concept of friction?

media type="youtube" key="KvQ3YDALMeg" height="390" width="640"

2. Create one question for static friction and another for kinetic friction. Include the similarities and differences between the two ideas.



3. How could one create a frictionless environment? These scientists claim they know where to find one. Follow link [|FRICTIONLESS???].