1. Represent the object as a dot or box. 2. Draw vectors representing all external forces acting on the object. 3. Label each force vector.

1. Identify all forces acting on the object. 2. Resolve forces into components (if necessary). 3. Add force vectors using vector addition.

1. Draw a free-body diagram. 2. Determine the net force acting on the object. 3. Apply the equation $F = ma$ to find the acceleration.

1. Identify the net force (F) acting on the object. 2. Identify the mass (m) of the object. 3. Use Newton's Second Law, $a = F/m$, to calculate the acceleration.

1. Identify an action force exerted by object A on object B. 2. Identify the reaction force exerted by object B on object A. 3. Confirm the forces are equal in magnitude and opposite in direction.

A quantity with both magnitude (size) and direction.

A push or pull; a vector with magnitude and direction.

A diagram showing all the external forces acting on an object.

The strength or size of the force.

The sum of all force vectors acting on an object (use vector addition).

The force exerted on an object.

The force experienced by the object in response to the action force.

A quantity with both magnitude (size) and direction.

A push or pull; a vector with magnitude and direction.

A diagram showing all the external forces acting on an object.

The strength or size of the force.

The sum of all force vectors acting on an object.

A pair of equal and opposite forces resulting from the interaction between two objects, as described by Newton's Third Law.