chapter 4 vocab

Question 1

Force

Answer 1

an action exerted on an object which may change the objects state of rest or motion

Question 2

Contact forces

Answer 2

result from physical contact between two objects.

Question 3

Field forces

Answer 3

does not involve physical contact between two objects. These are non-physical forces like, electromagnetic fields and the gravitationally force.

Question 4

Force diagram

Answer 4

diagrams that show force vectors as arrows

Question 5

Inertia

Answer 5

The tendency of an object to resist being moved or, if the object is moving, to resist a change in speed or direction.

Question 6

newton’s first law

Answer 6

the law of inertia

Question 7

Newtons first law of motion

Answer 7

An object at rest remains at rest, and an object in motion continues in motion with constant velocity (that is, constant speed in a straight line) unless the object experiences a net external force.

Question 8

what is an objects nature?

Answer 8

maintain its state of motion or rest.

Question 9

external force

Answer 9

a single force that acts on an object as a result of the interaction between the object and its environment.

Question 10

2. Net force

Answer 10

the vector sum of all forces acting on an object.

Question 11

b. Equilibrium

Answer 11

the state in which the net force on an object is zero

Question 12

a. Newton’s second law

Answer 12

i. Force is proportional to mass and acceleration