Newton's Second Law
Forces and Motion

# Marshmallow Shooter

Enrichment Activity for 5-11 11-14

#### What you need

• Piece of thin card (A4 size)
• Sticky tape
• Marshmallows

#### Instructions

1. Roll the piece of card lengthways into a tube that is just wide enough to be a snug fit for a marshmallow.  Put tape along the whole length of the tube to hold it together and seal the join
2. Put a marshmallow in one end of the tube, hold the tube horizontal, and blow from the opposite end. If the marshmallow doesn’t move, adjust the diameter of the tube. Note how far it flies
3. Try again with a new marshmallow but this time blow from the end with the marshmallow.  Keep blowing until the marshmallow leaves the tube

#### Results and Explanation

By blowing as the marshmallow travels along the whole length of the tube, you’re applying a force for longer. This means the marshmallow accelerates for longer, emerges from the tube at a greater speed and flies further.

These experiments have not been specifically safety tested for home use but we believe them to be safe if the instructions are followed. Adult supervision or direction is recommended as appropriate. All experiments are carried out at your own risk.

###### Newton's Second Law
is expressed by the relation F=ma
can be used to derive Kepler's First Law