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.
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.
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.
There’s a man working at Six Flags Over Georgia in Austell who claims to have the best job in North America. Who could pass up an opportunity to find out why? Not us! And it turns out there are a lot of amazing jobs at this place. For example, they actually have jobs riding rides! And if you want to set yourself up for a job like this, it will help to learn some science. You’ll find out why. Oh, and we’ll ride a coaster or two too!
In this episode of Things Explained, we discuss how a tiny paper clip sinks in water but a cargo ship weighing 250,000 tons floats. We also explain what density, buoyancy, and a man named Archimedes have to do with this science phenomenon.
