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Kids learn about speed and velocity in the science of physics and the laws of motion including units and measurement. What is the difference between speed and velocity?
When you accelerate or decelerate, you change your velocity by a specific amount over a specific amount of time. Just as with velocity, there is something called instantaneous acceleration. Instantaneous means scientists measure your acceleration for a specific moment of time.
Velocity can help us to figure out where and when objects in a video game or animated simulation will collide. It can also tell us if two objects are going to collide on screen. This is useful in flight simulations and other training programs.
What happened at Area 51? Why is Roswell famous as the site of an alien encounter? What do experts say about these mysteries? Pupils will learn about how to use and review case studies, and critique evidence in our National Geographic Kids’ Alien investigation primary resource sheet.
Alien life, or extraterrestrial life, is hypothetical life that could possibly exist outside of Earth, and which did not originate on Earth. Alien life could range from simple forms of life, such as bacteria and archaea, to intelligent and even sapient beings.
In this activity, students learn to extract data about the motion of objects using videos. Several examples of videos are provided, as well as instructions for using some of these videos to measure velocity.
Can we figure out the average velocity? The average velocity is just the average of the initial velocity and the final velocity. The average velocity is just equal to the average of these two numbers: so, minus 100 plus 0 over 2-- and I'm just averaging the numbers-- equals minus 50 meters per second.
