Module 2 Part 1: Forces Flashcards
what does newtons 1st law state (2)
An object at rest will remain at rest
An object moving at constant velocity will continue to move at constant velocity unless acted upon by a net (unbalanced) force
what is another name for newtons first law
Law of Inertia
what is translational equilibrium
when an object is at a constant velocity ( at rest or moving)
what is acceleration (2)
a change in speed
a change in direction
what happens in a balanced force (2)
the sum of horizontal forces equal zero
the sum of vertical forces equal zero
what is weight
a force experienced by all massive objects when placed in a gravitational field
what is the symbol for weight
W
what is the Equation for Weight
W = mg
what is weight force measured in
Newtons
what is Newtons second law
the net force acting on an object is directly proportional to its acceleration (when mass is constant)
what is the equation for newtons second law
F=ma
what is masses relationship with acceleration
they are inversely proportional
what is Newtons 3rd law
for every active force(F₁) there is an equal and opposite reactive force(F₂ = -F₁)
what are contact forces
forces applied by direct contact
what are non contact forces
forces applied through fields
