The vocabulary words such as net force, equilibrium, normal force, Newton, weight, free-body diagram, center of gravity, and external force are related to the study of dynamics in physics, which examines how forces affect motion.
When trying to match each word to its corresponding sentence, we are working with the concepts of dynamics, which is the study of how forces affect the motion of objects. Let's match the words as follows:
- The net force is the vector sum of forces acting on an object.
- A system is in equilibrium when there is no change over time in its motion.
- The normal force is a force perpendicular to a surface.
- The supermarket often sells meat and vegetables by the newton, a unit of force often associated with weight.
- The force of gravity acting on an object is the weight.
- A/An free-body diagram represents the location, magnitude, and direction of all forces acting on a single object isolated from its environment.
- Weight is a force that acts through the center of gravity of an object.
- An action that may cause the motion of a body to change is called an external force.
Moreover, related to the additional one-word answers for descriptions provided:
- a. The force with which the Earth attracts a body is called gravity.
- b. The unit for energy is the joule.
- c. The movement of a body in the Earth's gravitational field when no other forces act on it is known as freefall.