DO NOW Forces

Vocabulary: Force

• push or pull exerted on an object

• tendency of an object to resist change

• constant velocity that is reached when the drag force equals the force of gravity

• a type of physical model which represents the force acting on a system

Vocabulary: free-body diagram

• a type of physical model which represents the force acting on a system

• tendency of an object to resist change

• vector sum of all the forces on an object

• the force an object experiences as a result of all the forces acting on it, giving the object an acceleration

Vocabulary: net force

• vector sum of all the forces on an object

• two forces between two objects that are in opposite directions and have equal magnitudes

• the force an object experiences as a result of all the forces acting on it, giving the object an acceleration

• It is sometimes called the law of inertia.

Vocabulary: inertia

• tendency of an object to resist change

• a type of physical model which represents the force acting on a system

• vector sum of all the forces on an object

• constant velocity that is reached when the drag force equals the force of gravity

Vocabulary: equilibrium

• The net force on an object is zero.

• An object at rest will remain at rest if the net force on that object is zero.

• the force an object experiences as a result of all the forces acting on it, giving the object an acceleration

• All forces come in pairs.

Vocabulary: Apparent weight

• the force an object experiences as a result of all the forces acting on it, giving the object an acceleration

• constant velocity that is reached when the drag force equals the force of gravity

• push or pull exerted on an object

• gravitational force on an object

Vocabulary: weightlessness

• The object’s apparent weight is zero.

• two forces between two objects that are in opposite directions and have equal magnitudes

• the force an object experiences as a result of all the forces acting on it, giving the object an acceleration

• The net force on an object is zero.

Vocabulary: terminal velocity

• constant velocity that is reached when the drag force equals the force of gravity

• a type of physical model which represents the force acting on a system

• tendency of an object to resist change

• push or pull exerted on an object

Vocabulary: interaction pair

• two forces between two objects that are in opposite directions and have equal magnitudes

• All forces come in pairs.

• vector sum of all the forces on an object

• push or pull exerted on an object

Name the force that the arrow shows.

• normal

• friction

• weight

• tension