forces Flashcards
what is a force? (1)
a push, pull or twist
how is force measured? (1)
Newtons (N)
balanced forces? (2)
when two forces are equally distributed
if a force is balanced, it will remain as it is and wont move
unbalanced forces? (2)
when two forces are not equally distributed
if a force is unbalances, it will accelerate in the direction of the net force
net force? (2)
the sum of the forces acting on an object
force = mass x acceleration
newtons law 1? (1)
an object at rest, remains at rest/ an object in motion will stay in motion unless acted upon
(the literally definition of inertia)
newtons law 2? (2)
acceleration/ gaining speed happens when a force acts on a mass (an object)
force = mass x acceleration acceleration = force / mass mass = force / acceleration
newtons law 3? (1)
every action has an equal and opposite reaction/ force
mass? (2)
measure of how much matter in an object
mass = force / acceleration
weight? (2)
force due to gravity pulling us back down to earth
weight = mass x gravitational field strength
friction? (1)
a force caused by two objects rubbing against each other; restricting or preventing motion
air resistance? (1)
a friction that acts on an object in the air
tension? (1)
force through a fully stretched object
spring force? (1)
force shown by a compressed spring
gravity? (1)
the force that pulls you down to earth (weight)
normal force? (1)
balances the weight on an object so you don’t fall through the floor
applied force? (1)
force applied from one object to another
free body diagram? (1)
a force diagram that shows a visual of an object and the forces attached to it
terminal velocity? (2)
maximum velocity of a falling object
occurs when the air resistance = the downward force of gravity
momentum? (2)
the strength or force something has when moving
momentum = mass x velocity (p = m x v)
reaction time? (2)
the length of time taken for a person to respond to a stimulus
affected by alcohol, drugs, fatigue, age and distractions
reaction distance? (2)
the distance a car travels while the driver reacts to the stimulus
reaction distance = speed x reaction time (convert speed to m/s)
braking distance? (1)
distance from when brakes are fully applied to when it comes to a complete stop
stopping distance? (1)
stopping distance = reaction distance + braking distance
