What do you think a force diagram might look like for a hit that causes a concussion? Draw a diagram. Consider only the person's head in your diagram. Be sure to draw arrows to the proper scale. In a text box, state whether your diagram shows balanced or unbalanced forces.

a and b sometimes have a positive value

a.metals can become magnetic if they have many spinning electrons that create magnetic fields.d.only some metals are attracted by magnets; these metals are called ferromagnetic.

d.wrapping an insulated wire around a metal with ferromagnetic properties and applying an electric current.

truck y has a greater velocity than truck x.