earth can be divided into three main layers: the core, the mantle and the crust. each of these layers can be further divided into two parts: the inner and outer core, the upper and lower mantle and the continental and oceanic crust. both the inner and outer core are made up of mostly iron and a little bit of nickel.
• a resultant force is the single force and associated torque obtained by combining a system of forces and torques acting on a rigid body. the defining feature of a resultant force, or resultant force-torque, is that it has the same effect on the rigid body as the original system of forces.
• are two forces acting in opposite directions on an object, and equal in size. anytime there is a balanced force on an object, the object stays still or continues moving continues to move at the same speed and in the same direction.
• are forces that cause a change in the motion of an object. learn more about how to identify balanced and unbalanced forces through several examples and test your knowledge with quiz questions.
pls if it helps..
the answer is (c). group iv. hope this !