Unit 1 Lesson 1 - Introduction to Forces Flashcards
a push or a pull
force
scientists measure force using a unit called the
newton
the speed of an object in a particular direction
velocity
the rate at which velocity changes over time
acceleration
the size of the force and direction
magnitude
force is a _____ quantity (in fancy terms)
vector
the sum of the forces
net force
to get something in balance, you need an….
where one force is pushing or pulling harder then the other force) (the net force is not zero
unbalanced force
a force where both sides are pushing or pulling equally so no side is moving (the net force is zero)
balanced force
the resistance a surface puts on anything sliding over it
friction
the friction of the air molecules
drag
the change of speed or direction
velocity
a force of attraction between objects that is due to their masses and that decreases as the distance between the objects increases
gravity
