What is the momentum of a 75kg bullet is 9 kg. m.s-1 bowling travelling ball at 2,2 m. s-1

8. why do radio telescopes convert radio waves (analog signals) to electrical (digital) signals for analysis? (hint: what did the article say about the advantages of digital signals? )

What are the three ways that an object can accelerate

An object weigh 40n in air ,weigh 20n when submerged in water,and 30n when submerged in a liquid of unknown liquid density.what is the density of unknown of liquid?