What does it do?

Makes the two carts bounce off one another in a realistic way.

How do I use it?

Take out the 'Swap Robot' and put him in a truck with his input box. Then place the two carts on the ground (at the same height). Use the speed sensors to move them into one another. You can change the masses of the carts using Pumpy or giving the birds numbers.

How does it work?

The robot performs some calculations based on the speed and mass of the two carts (the calculations are based on the Conservation of momentum and Conservation of energy laws).

What can I use it for?

Experimenting with different types of collisions between the two carts. E.g. what happens if one of the carts isn't moving? What happens if one of the carts is much bigger than the other one?

Known Issues

• Sometimes there are rounding errors when setting the mass with the bird, try giving the bird the number a second time!  

Note: the tool has been updated to include auto translation of the instructions (English, Swedish and Portuguese available).