Scientific Thursday :The Attack of the Straw

The Attack of the Straw

Here's an easy way to learn about inertia and momentum

You will need:

A raw potato
Straws

What to do:
Put a potato on the table or kitchen counter and hold it firmly with one hand.

With a fast, strong push, stab the potato with the straw.

Observe what happens? Did the straw bend or go into the potato? The straw should go into the potato. If it didn't, try again with another straw--maybe a little faster or harder.
An object remains at rest (the potato, in this case) or keeps moving (the straw, in this case) unless it is acted upon by some external force.

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