1. The problem statement, all variables and given/known data An astronaut exerts a 110-N force pushing a beam into place on the International Space Station. The beam accelerates at 0.40m/s2 . What is the percent uncertainty in your answer? The uncertainty of the force is 10 N and the uncertainty of the acceleration is 0.01 m/s2. 2. Relevant equations F=m*a 3. The attempt at a solution I plugged into the equation and found the mass to be 275kg. I get lost after that because I need to find the percent uncertainty.