The Minds On Physics program consists of 16 modules - each covering a separate topic. Each module consists of a varying number of sublevels. Every sublevel addresses one or two objectives. The objectives for the Circular Motion module are listed below.

**Sublevel 1: Speed and Velocity**- The student should be able to distinguish between the concepts of speed and velocity and use such concepts to describe the motion of objects in a circle.
- The student should be able to identify and describe the direction of the velocity vector for an object moving in a circle and identify the variables effecting the magnitude of the velocity.

**Sublevel 2: Acceleration and Net Force**- The student should be able to recognize that objects moving in circles have an acceleration and explain the cause of this acceleration.
- The student should be able to describe the magnitude and direction of the acceleration and net force vector of an object moving in a circle at a constant speed.

**Sublevel 3: Centripetal Force and Inertia**- The student should be able to use the concept of inertia to explain the reason that objects moving in circles have a tendency to move tangent to the circle.

**Sublevel 4: The Centripetal Force Requirement**- The student should be able to use the centripetal force requirement to identify the force which act centripetally in order to cause an object to move in circular motion.
- The student should be able to analyze a physical situation involving circular motion and compare the magnitude of the individual forces which act upon an object.

**Sublevel 5: Mathematical Analysis of Circular Motion**- The student should be able to utilize Newton's laws to analyze the motion of an object moving in a horizontal circle and to determine the values of the acceleration, net force and individual forces.
- The student should be able utilize Newton's laws to analyze the motion of an object moving in a vertical circle and to determine the values of the acceleration, net force and individual forces.

**Sublevel 6: Newton's Law of Universal Gravitation**- The student should be able to recognize key elements of Newton's law of universal gravitation.
- The student should be able to identify the variables effecting the force of gravity and predict the effect of alterations in these variables upon the force of gravity.

**Sublevel 7: The Acceleration of Gravity**- The student should be able to define the accceleration of gravity and identify the variables which effect its value.
- The student should be able to predict the effect of alterations in strategic variables upon the acceleration of gravity.

**Sublevel 8: Satellite Motion**- The student should be able to identify the variables effecting the orbital speed of a satellite and discuss the dependence of orbital speed upon these variables.
- The student should be able to identify the variables effecting the acceleration and net force acting upon an orbiting satellite and discuss the dependence of a and Fnet upon these variables.

**Sublevel 9: Weightlessness**- The student should be able to distinguish between the weight of an object and the sensations of weightlessness experienced by an object and to explain the cause of these sensations.
- The student should be able to apply concepts of weight and weightlessness to explain a variety of motions such as roller coaster motions and satellite motion.

**Sublevel 10: Kepler's Laws of Planetary Motion**- The student should be able to identify and describe each of Kepler's three laws of planetary motion.
- The student should be able to use Kepler's law of harmonies to make calculations regarding the radius and period of orbits of planets.

© 2002-2008, Minds On Physics Internet Modules.

All rights reserved.