Aim to make a marshmallow shooter and work out what forces are acting on it.
Equipment paper cup, scissors balloon, marshmallow
Method
1. cut bottom of cup
2.cut neck off balloon
3. stretch open end over the bottom of cup
4. pull balloon back to fire marshmallow
Results
the marshmallow went flying
Discussion
when the marshmallow was in the cup all the forces thrust, friction, gravity and support were even as it wasn't moving.
Conclusion
Yes,it worked really well. some groups taped the balloons to the cups to make it more stable so it wouldn't come off when they launched it.
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