Dynamics Physics help urgent 1. The problem statement, all variables and given/known data Sara wonders what the normal force on her 1.0 kg water bottle would be if she tries to lift it with 4.0 N (she used a Newton spring scale to measure her applied force). What is the bottle's acceleration? 2. Relevant equations Fg = mg 3. The attempt at a solution I found Fg which is 9.8 N downwards. Not sure what to do after this. Any help, please?