Equipment: Paper cup, Scissors, Balloon , Marshmallow,
Method :
- cup of bottom of cup
- cut of the neck of Balloon
- stretch the open end of the balloon over the bottom of the cup
- place marshmallow in cup
- pull ballon back to fire.
Results:
cup broke but at end more accurate at end hit Mr heath with 3 rapid fire
Discussion: the forces acting on it
in the cup the force acting on the marshmello were Friction and gravity and support keeping it in the cup
As soon as it leaves the cup the forces acting were thrust and support over powering drag and gravity
as it moves toward the ground
gravity and drag were pulling it towards the ground
Conculsion:
it worked alright i would use a stronger cup next time 
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