Weight and Mass
Description: Two of the key elements of physics, an object's weight and mass determine how it's affected by gravity.
Category: Janet's Planet
Note: This video streams on an HTML5 player. It runs on Chrome, Firefox, Opera, Safari or Internet Explorer 9 or higher. It is also optimized for iOS devices, including iPad, iPod, and iPhone.
Game Spotlight
Kick the soccer ball to score a goal in this fun sports game. The goalie and his defenders will try to stop you. You will need to aim and time your kick just right to get your ball into the opponent's goal. How many penalty kicks can you make?