The most unexpected answer to a counting puzzle: Colliding Blocks - Part 1 of 3

The most unexpected answer to a counting puzzle: Colliding Blocks - Part 1 of 3

Assessment

Interactive Video

Physics

11th - 12th Grade

Hard

Created by

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The video explores a fascinating mathematical concept involving sliding blocks and elastic collisions, where the number of collisions corresponds to the digits of π. It introduces the idea of mathematical croquet, examines different mass ratios, and explains an algorithm for computing π using block collisions. The video concludes with a discussion on the hidden circle concept related to energy conservation.

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5 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the outcome when two blocks of equal mass collide in the described scenario?

The second block bounces off the wall and transfers momentum back to the first block.

The first block bounces back, and the second block remains stationary.

Both blocks move together towards infinity.

The first block stops, and the second block moves indefinitely.

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How many total collisions occur when the first block is 100 times the mass of the second?

3141

314

31

3

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What pattern emerges when the mass of the first block is a power of 100 times the mass of the second?

The number of collisions matches the digits of π.

The blocks move in a circular path.

The collisions become inelastic.

The blocks stop moving after a few collisions.

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why is the described method of computing π considered inefficient?

It requires a large number of blocks.

It is not based on real physics.

It needs extremely high numerical precision and takes a long time.

It only works for small values of π.

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What hidden mathematical concept is hinted at in the final section?

The application of calculus in collision dynamics.

The presence of a hidden circle related to energy conservation.

The role of friction in idealized physics.

The use of triangles in energy conservation.