Absent

Marcel and I explored more problems dealing with forces applied at different angles. By applying the laws of motion, different variables including the coefficients of friction can be found. Marcel solved triangles involving normal force and the weights of objects. We also discussed terminal velocity in free fall and the four basic forces of the universe. There was no assignment.

I worked with Marcel on a problem from our previous class using forces applied at an angle acting against friction. I showed him the steps involved in drawing a free-body diagram and calculating all forces acting on the object. We then worked more problems and started work on another, more complex problem. I gave Marcel some problems to do and a reading assignment for the next session.

I worked with Marcel on an example problem using a force applied at an angle acting against friction. I showed him the steps involved in drawing a free-body diagram and calculating all forces acting on an object. We then worked a problem patterned after the example and started work on another, more complex problem. Since we didn't finish the last problem, there was no assignment.

The homework assignment was reviewed and corrected. The lab was to determine the potential energy in a bow string at set distances from the rest position. The force at each distance was measured and a graph propagated of force v distance.The area under the curve was determined and represented the potential energy of the system. The velocity of the arrow was then determined by the formula for KE.

I demonstrated the difference between mass and weight for Marcel by using the mass scale and the spring scale to measure those two properties of a wooden block. We then discussed normal force, static and kinetic friction, applied force, and forces on an inclined plane. We then did some problems dealing with the two types of friction and I assigned some reading and problems from the section we are studying.

I reviewed Marcel's homework assignment and he showed mastery other than a small error. I then explained how the second and third laws of motion could be applied in physics problems. We solved several problems together. There was no assignment.

The law of conservation of energy states that energy is neither created or destroyed, but can be transformed. The net energy present at the start must equal the net energy at the finish. Any change in energy will be shown as light,or heat, or some other form of energy. The potential energy of an object is converted to kinetic energy as the object moves, the kinetic energy at the end is equal to the potential energy at the beginning. A few other examples were used.

I introduced Marcel to inertia, force diagrams, free-body diagrams, Newton's three laws of motion, force vector resolution, and normal force. I reviewed an example of how to resolve a force vector and assigned Marcel to do two similar problems for homework.

Physics lab to investigate the force and distance in moving an object up an incline. Assignment from questions at the end of the chapter.