Chapter 4,5,6 vocab

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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

kilograms

mass is measured in...

mass

the quantity of matter in an object

weight

the force due to gravity on an object

newtons

forces are measured in ...

net force

the combination of all forces acting on an object

normal force

a force that counteracts the weight

equilibrium

occurs when the net force is zero

a push or a pull

friction

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

inertia

the property of a body t resist change

inversely

two values change in opposite directions

a=f/m

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

interaction

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

Example: