Experiment of December 8, 2022:

The time to submit an answer is over. You can now view the solution of the experiment.

Solution video:



What does Mr. Santa observe when the two balls A and B meet?

A) A and B continue to roll at a similar speed.

B) A stops, B continues to roll (almost) at A's original speed.

C) A reverses its direction of movement, B rolls slowly away.

D) B continues to roll (almost) at A's original speed, A stops briefly but then accelerates again to continue rolling slowly in the same direction.

Advice of the day:

If you don't have a wooden train at hand, you can also use the groove of a book cover as a rail. Conduct the experiment and observe the moment of collision very closely. The proof of the pudding is in the eating ;)