Name a latitude where each of the following occurs polar easterlies, westerlies, and trade winds

If two students are running down the hall toward each other, trying to get to class, and they have the same mass and acceleration, what will happen when they collide? will their forces cancel out or will each one experience a reaction?

An ionic compound can conduct electricity when a it is dissolved in water b its crystals are ground into powder c it is in solid form d it is heated to just below its melting point

Which changes would result in a decrease in the gravitational force btween two objects? check all that apply