An 1.2 kg object is pushed across the floor with an applied force of 9 N. If the object moves at 2.5 m/s, what is the coefficient of friction?

Can somebody explain to me how newton's 3rd law relates to momentum? ~ap physics 1

Electroplating is a way to coat a complex metal object with a very thin (and hence inexpensive) layer of a precious metal, such as silver or gold. in essence the metal object is made the cathode of an electrolytic cell in which the precious metal cations are dissolved in aqueous solution. suppose a current of 480.ma is passed through an electroplating cell with an aqueous solution of agno3 in the cathode compartment for 46.0 seconds. calculate the mass of pure silver deposited on a metal object made into the cathode of the cell. round your answer to 3 significant digits. also, be sure your answer contains a unit symbol. ×10μ

Determine the age of a fossil if it had only one eighth of its original carbon-14 content remaining?