What are the factors affecting the moment of a force

Ryan is examining the energy of the particles in a bar of gold. what is ryan most likely studying?

Abumper car with a mass of 250 kg is traveling at a speed of 4 m/s. this bumper car collides and sticks to a second bumper car with a mass of 250 kg, which is initially at rest. what is the final speed of these two bumper cars after the collision, assuming they remain stuck together?

Identify some abiotic characteristics of the tundra biome.