Bring your physics equipment into the 21st century with the new and improved CENCO second law of motion apparatus.

• Demonstrates the independence of horizontal and vertical motions
• Explores simple projectile motion

The second law of motion apparatus is a classic device in which one ball is projected horizontally while a second is just released to fall. Both experience a vertical acceleration due to gravity, neither experiences a horizontal acceleration after release. Despite the difference in their horizontal speeds, both strike the floor simultaneously, showing that vertical and horizontal motions do not affect each other. However, if the projected ball is not launched horizontally, the two balls do not strike simultaneously.

The CENCO second law of motion apparatus improves on the classic design in a number of ways to make the demonstration more convenient.