Building Instructions -

• Inertia

There is a lot of physics and math involved when learning with LEGO Mindstorms EV3 robots. It is generally "difficult" to include them directly during classes because students are coming for "something funnier" and at the same time, they could be of different ages. But Inertia is a pretty common topic that is quite easy to introduce to students, especially with a robot. 
The robot moves and stops. What will happen with the cargo when the robot stops? Naturally, the cargo will continue moving and this is dangerous. For how long, what would be the energy? All these are things that could be discussed with this robot.
The robot is not completely finished because you have to finish it and decide on the wheels to be used. 

This is an attachment trigger from the robot inertial. It's built with LEGO Education SPIKE Prime parts and it demonstrates how to move with the robot, stop, the attachment activates and it collects a few parts. The goal of the attachment is to collect parts from the field without the use of any motors. It is an easy and quick way to build an attachment for FIRST LEGO League/World Robotics Olympiad and other robotics competition. The principle is the same. The attachment is designed for Luly, small LEGO Education SPIKE Prime competition robot with 3D building instructions

This device is designed to be attached to "LEGO Mindstorms Robot with a large inertia cargo". It is a color sensor that goes on the caster wheel of the robot. In this case, the sensor will follow the robot.

This is an Inertia triggered attachment build with a LEGO MINDSTORMS Robot Inventor 51515 set. With this attachment we can collect different parts and bring them back to base at FIRST LEGO League competitions. The principle is useful as no additional motors are required for activating this attachment. In the same time it is active which means that it moves and can change it's position in space separately from the robot.. which is useful