1F Newton's First Law

Cart on a Cart

The carts are uncoupled before hitting a block solidly secured to the floor. The
Catalog: 
1F30.30
Location: 
wall
A cart is stacked on top of another cart and are coupled together. A rider on the stack of carts is pushed. Once the carts are up to speed they are uncoupled just before striking an object that stops the lower cart. The top cart continues at the same speed as before the impact. The lower cart stops due to an external force.

Pen in a Bottle

The pen should fall in the bottle.
Catalog: 
1F20.36
Location: 
Ab3
Demonstrates inertia of rest using a pen carefully balanced on a hoop, that is balanced on a Coca-Cola bottle.

Smash Your Hand

Catalog: 
1F20.20
Location: 
Ab3 (lead brick is in Af6)

Place a lead brick on your hand and hit it with a hammer and you will not feel the blow of the hammer. Repeat the demo substituting a wooden block, but do not hit the block with as much force as before and you will feel the hammer's blow.