Experiment of December 17, 2025:

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Solution video:

Experiment:

Question:

What happens in both cases?

A) 1: the ruler flies away in a high arc, 2: the ruler remains unchanged, the ball bounces away.

B) 1: the ruler flies away in a high arc, 2: the ruler flies away in a high arc.

C) 1: the ruler remains unchanged, the ball bounces away, 2: the ruler remains unchanged, the ball bounces away.

D) 1: the ruler remains unchanged, the ball bounces away, 2: the ruler flies away in a high arc.