Mass vs. Weight in the International Space Station Principle: Mass and weight are not the same thing. Hypothesis: Lighter objects will fly further than heavier objects. Experiment: Take the pneumatic rocket launcher and tennis-ball rocket that makes it possible to add payload outside. Wear safety glasses, keep safety on until field of fire is clear of personnel and rocket is aimed in a safe direction. Set Launcher at 85 degrees. Conclusions: Have students do calculations and discuss what they learned.   How weight affects Rocket Flight on Earth Pump pressure to 40 psi with empty payload; Mark how far rocket flies. Pump pressure to 40 psi with loaded payload; Mark how far rocket flies. .

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