The Physics of Why Connective Blocks Break (And How to Prevent It)

What Is Force?

Force is a push or pull that changes how an object moves or its shape. When your blocks fall, the force of the impact is what causes them to break.

Imagine you’re rolling a ball down a ramp. The ball speeds up as it rolls because of gravity, the force that pulls everything toward the ground. When the ball hits the floor, the floor pushes back with an equal and opposite force. If the ball is soft, like a foam ball, it might squish instead of breaking. But if the ball is hard, like a marble, the force of the impact can cause it to crack or shatter.

The same thing happens with your blocks. When they fall, the floor pushes back with a force that tries to stop them. If the blocks are too weak to handle that force, they break.

Why Do the Blocks Break?

1. The Force of the Fall

When you drop your blocks, they fall because of gravity. The higher you drop them from, the faster they go. Faster falls mean more force when they hit the floor.

Example: If you drop a block from your knee height, it will hit the floor with less force than if you drop it from over your head.

2. The Floor’s Reaction

The floor doesn’t just let the blocks land gently—it pushes back with a force equal to the impact. Hard floors, like tile or wood, push back very strongly, which can crack weak blocks. Soft floors, like a rug or carpet, push back more gently, protecting the blocks.

3. Weak Spots in the Blocks

Blocks that are thin, hollow, or have weak seams can’t handle the force of the impact. The force pushes on these weak spots, causing them to crack or break apart.

Example: Think of a soda can. If you step on an empty can, it crushes easily because the sides are thin and hollow. But if the can is full, it’s much harder to break because the liquid inside makes it stronger.

The Story of the Falling Tower

One afternoon, Jake built a tall tower with his connective blocks. It reached all the way to his shoulder! He stepped back to admire his work, but as he did, his little sister bumped the table. CRASH! The tower fell straight to the floor.

Jake ran over to see what happened. The blocks at the bottom were cracked, and some had broken apart. He picked up one of the pieces and noticed that the cracks were right where the blocks had snapped from the force of the fall.

Jake realized that the higher the tower, the harder the blocks hit the floor when they fell. That’s because they had more time to speed up as they fell, just like when you roll a ball down a ramp—it goes faster and faster!

How to Protect Your Blocks

• Drop Them from a Lower Height: The higher you drop the blocks, the more force they’ll experience when they hit the floor. Try placing them down gently instead of dropping them from high up.
• Use a Soft Surface: Play on a rug, carpet, or foam mat. Soft surfaces act like a cushion, absorbing some of the force so the blocks don’t have to handle all of it.
• Build Shorter Towers: The higher the tower, the harder it falls. Try building shorter towers to reduce the force when they topple.
• Choose Stronger Blocks: If your blocks are thin or hollow, try switching to thicker, solid blocks. They can handle more force without breaking.
• Check for Weak Spots: Before you build, look at your blocks. If they already have cracks or weak seams, they’re more likely to break when they fall.

Fun Experiment: Test the Force!

Want to see the force in action? Try this experiment:

1. Stack two blocks on top of each other.
2. Drop them from different heights—first from 1 inch, then from 1 foot, and finally from as high as you can reach.
3. Observe what happens each time.

You’ll notice that the higher you drop the blocks, the more likely they are to break. That’s because the force of the impact gets stronger the faster they fall!

Final Thoughts

Physics helps us understand why things happen the way they do. When your connective blocks break, it’s because the force of the fall is too much for them to handle. But now you know how to protect them and keep them safe.

So next time your tower falls, don’t worry. Instead, think about how you can make the landing softer or how you can build in a way that protects your blocks. With a little care, you can keep them strong for longer!