Resources

Are Speed and the Magnitude of Velocity the Same? “The person on the street” often uses the terms speed and velocity as if they are the same thing. By now you are probably familiar with the fact that in physics speed is a scalar quantity that has no direction associated with it while velocity is a vector quantity that tells what direction an object is moving. Since the magnitude of a vector is a scalar, can’t we just be a little more careful and say that the terms speed and magnitude of velocity are the same? The answer is not always.

The Hubble Law tells us that our Universe is expanding. We observe galaxies, find their distances and their velocities, and find that they are all moving away from us. The more distant the galaxy, the faster it is moving away. From this information, we can estimate the age of our Universe. We assume that the Universe has always been expanding at the same rate, then we know how long distant galaxies have been travelling in order to get where they are today

The task of this lesson is to verify Hooke’s Law for a spring and determine its spring constant (k) using embedded video.

Hydrogen is being touted as a possible source of fuel for the future. This lesson will investigate whether hydrogen has a serious potential for the future and will look at the hydrogen fuel cell.

To verify the theoretical predictions for the acceleration of an object at the moon’s surface using Newton’s Universal Law of Gravitation.

The use of video capture and data analysis to explain the relationship between light, oxygen and carbon dioxide in the context of photosynthesis

Have you ever wondered what causes mirages, how lenses can focus light, or why your feet look closer and bigger in a pool of water than you know they are? This concept, known as refraction (Snell’s Law) is investigated using experimental video data.

This lesson plan uses the video of a rolling ball to explain motion. Students use the video and accompanying graphs to predict what will happen to the ball under different conditions

Alternative energy sources are energy sources other than the nonrenewable fossil fuels—coal, petroleum, and natural gas. Solar energy, or energy from the sun, is one energy source alternative. A passive solar heating system uses no pumps, fans, or mechanical devices. Insulation and heat storage are important factors in such a system

Did you ever wonder why it takes two batteries stacked together to run a flashlight or why your video game player takes four batteries? Why do they need to be put into these devices a certain way? This activity will allow you to explore how all this works by measuring the voltages across different numbers of batteries stacked together.

The use of video capture and data analysis to explain projectile motion and the concepts of velocity and acceleration.

The use of video capture and data analysis to explain velocity and acceleration

The use of video capture and data analysis to explain projectile motion and the concepts of velocity and acceleration.

Using a temperature sensor of thermometer, determine how the seasons are created and the importance role of the Sun.