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The vocab for Newton's first three laws for the test next week.

Newton's First Law

All objects continue in a state of rest or of motion in a straight line at a constant speed, unless it changes due to forces exerted upon it.

law of inertia

newtons first law


mass is measured in...


the quantity of matter in an object


the force due to gravity on an object


forces are measured in ...

net force

the combination of all forces acting on an object

normal force

a force that counteracts the weight


occurs when the net force is zero


a push or a pull


the force that acts between materials that touch as they move past each other


the property of a body t resist change


two values change in opposite directions

Newton's second law


air resistance

the friction acting on something moving through air

free body diagram

a diagram showing all the forces acting on an object

terminal speed

when acceleration terminates; air resistance = weight


a force is part of an ...

Newton's third law

when one object exerts a force on a second object, the second object exert an equal and opposite force on the first object

action force

1st force in an interaction

reaction force

2nd force in an interaction

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