how does the trend in electronegativity relate to the general trends in ionization energy and the magnitude of electron affinity?

1. a net force of 100 newton’s is applied to a wagon for 5 seconds. this causes the wagon to undergo a change in momentum of

What is the momentum of a 2 kg object moving at 15 meters per second

Consider a system to be two train cars traveling toward each other. what is the total momentum of the system before the train cars collide?   kg • what must the total momentum of the system be after the train cars collide?   kg •