PS Module 3: Forces & Newton's Laws

force that opposes the motion of objects that move through the air

• air resistance

• friction

• free fall

• terminal velocity

force that is directed toward the center of a curved or circular path

• centripetal force

• field

• inertial

• gravity

a region of space in which every point has a physical quantity, such as a force

• field

• free fall

• net force

• law of conservation of momentum

a push or pull exerted on an object

• force

• friction

• inertia

• Newton's 1st law of motion

describe the fall of an object on which only the force of gravity is acting

• free fall

• air resistance

• inertia

• terminal velocity

force that opposes motion between two touching surfaces

• friction

• inertia

• air resistance

• weight

attractive force between two objects that depends on the masses of the objects and the distance between them

• gravity

• force

• net force

• Newton's 3rd law of motion

tendency of an object to resist a change in motion

• inertia

• friction

• gravity

• air resistance

states that if no external forces act on a group of objects, their total momentum does not change

• law of conservation of momentum

• Newton's 1st law of motion

• Newton's 2nd law of motion

• Newton's 3rd law of motion

sum of all the forces acting on an objects

• net force

• field

• gorce

• Newton's 2nd law of motion