Henry meets a some ice skates in an old shoe box. Henry learns what ice skates are for and how they work on the ice. Ice Skates have always wanted to perform in a figure skating show but they don't have a partner to skate with. Henry...

The idea of conservation of momentum can be used to work out what will happen when things collide. Conservation of momentum states that the total momentum of a closed system is constant. This means that the total momentum before a...