Redox reactions include which types of reactions? HELP ME ASAP

An object's buoyant force and weight mean the same thing.a. trueb. false

Henry, whose mass is 95 kg, stands on a bathroom scale in an elevator. the scale reads 830 n for the first 2.4 s after the elevator starts moving, then 930 n for the next 2.4 s. part a what is the elevator's speed 4.8 s after starting? express your answer with the appropriate units.

What is the force that opposes motion and works against the downward pull? a) friction b) gravity c) weight d) acceleration