Test Flashcards
When determining distance and location use
reference points
reference point
a distinct location or object that is then compared to another location
SI Unit
international system of units
displacement
the change in position from the reference point
Displacement is measured with
no direction
Speed
the distance traveled during a specific unit of time
Velocity
the displacement of an object during a specific unit of time
What is the formula for speed?
s=d/t
What is the formula for velocity?
v=final time - initial time/t
Force
push or pull
Vectors
a drawing whose size and direction represent the magnitudes and direction of the forces acting on the object
What is the abbreviation for force?
fp
normal force
fn
friction
ff
gravity
fg
net force
the sum of all of the forces acting on an object
Forces that act in the same direction
combine (add)
Forces that act in opposite direction
counteract (subtract)
balance force
when forces acting in opposite directions are exactly equal
unbalanced force
when forces acting in opposite directions are unequal
contact forces
friction, elastic, and air resistance
field forces
gravity, electrical, and magnetic=
When the force of gravity and the force of air resistance are equal and the acceleration is zero
terminal velocity
If you increase the distance, the gravity will….
decrease
