How does the law of conservation of mass relate to chemistry?

One of the cell membrane's functions is to protect the cell keep wastes in the cell create new cells keep light out of the cell

Naoki's bicycle has a mass of 10 kg. if naoki sits on her bicycle and starts pedaling with a force of 168 n, causing an acceleration of 2.8 m/s2, what is naoki's mass?

Type the letter that represents the correct location for each particle type below.