What force is required to accelerate an object having a mass of 3 kg at 5 m/s2?

Pls pls pls pls ! describe, in your own words, how you found the epicenter of the earthquake.

In science and physics what is the standard unit of measure for speed?

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 •