Momentum & Energy
In this segment we define the terms momentum and impulse. We see the impulse-momentum theorem in action by analyzing the motion of a freerunner and the motion of an egg hitting two very different surfaces.
The law of conservation of momentum is explained qualitatively and mathematically through examples involving billiards and roller skaters.
In this segment, we differentiate between elastic and inelastic collisions. The conservation of momentum and the conservation of energy are explored as we do examples involving these two types of collisions.
Work and energy are explored in this segment as we look at the work done by various types of forces. We also investigate what it means for the work done by an object when displacement and force are oriented in a variety of different ways.
Gravitational potential energy and kinetic energy are defined and explained mathematically through multiple example problems.
We explain the work-energy theorem and solve an example problem involving the equations for work and kinetic energy. We also discuss when work has a positive or negative value.
We investigate Hooke's Law as we explore the concept of spring potential energy. We also examine how to find this energy mathematically and graphically.
We explore the inner workings of a hydroelectric dam as we learn about the law of conservation of energy. The difference between conservative and non-conservative forces is illustrated and we work through an example problem involving gravitational potential energy and kinetic energy.
We learn how power relates to electrical and mechanical systems. We explore the multiple ways we can express power mathematically by working through an example problem that ties in Newton's second law and kinematic equations to find its solution.
Welcome to Physics in Motion – a new digital series for high school physics from Georgia Public Broadcasting!
Here in Georgia, blueberries are starting to give the peach more than just a little competition. During our visit with the folks at Cogdell Berry Farm, we start things off by listing the best ways to eat blueberries and we finish with a few surprises. For example, Cogdell Berry Farm uses laser beams to help sort their blueberries. And this is the type of technology that’s made Georgia one of the most productive blueberry states in the country. We’re only sorry you can’t taste this video. These blueberries are delicious!
The University of Georgia's College of Agricultural and Environmental Sciences invites us on a tour of its Mountain Research and Education Center, where we interview Dr. Wayne Hanna, one of the foremost turf growers in the world! He’s grown grass for sports complexes as far away as the World Cup Soccer Tournament in South Africa, and as close to home as UGA’s own athletic fields. Teachable Moments center around agriculture, including photosynthesis, the nitrogen cycle, and more.