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At first glance, rocket propulsion and air balloons do not have anything in common. The balloon is blown up, the outlet opening is closed with your finger, set it up and remove your finger. The thrust created by the air streaming out causes the vehicle to accelerate. This offers a physical explanation of Newton's 3rd law of motion (for every force there is an equal and opposing force).
This jet force principle can be seen in the natural world too. Squid and jellyfish use it in order to move. Heron von Alexandria deployed the jet force principle combined with steam in his machine, known as the wind ball or Aeolipile.
Scope of delivery: 1 balloon car, colour not guaranteed
Children under 8 years of age can choke on uninflated or burst balloons. Adult supervision is required. Keep uninflated balloons out of reach of children. Burst balloons must be removed immediately.
