AdvancedGen Second law of Motion Apparatus
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 Second Law of Motion Apparatus improves on the classic design in a number of ways to make the demonstration more convenient:
Demonstrates the independence of horizontal and vertical motions
Explores simple projectile motion