Chapter 10 Study Guide Flashcards
a push or pull
Force
the SI unit for the magnitude or strength of a force
Newton
the combination of all forced acting on an object
net force
causes the velocity of an object to change
unbalanced forces
equal forces acting on one object in opposite directions
balanced forces
a force that two surfaces exert on each other when they rub against each other
friction
the friction that acts on objects that aren’t moving
static friction
occurs when two solid surfaces slide over each other
sliding friction
when an object rolls across a surface
rolling friction
occurs when a solid object moves through a fluid
fluid friction
a force that pulls objects towards each other
gravity
the measure of the amount of matter in an object
mass
the gravitational force exerted on a person or object at the surface of a planet
weight
when the only force acting on an object is gravity
free fall
a type of fluid friction that acts on objects falling through the air
air resistance
an object that is thrown
projectile
an elastic force that squeezes or pushes matter together
compression
an elastic force that stretches or pulls matter
tension
the tendency of an object to resists a change in motion
inertia
a characteristic of a moving object that depends on both the mass and the velocity of the object
momentum
states that, in the absence of outside forces, the total momentum of objects that interact does not change
the law of conservation of momentum
any object that orbits another object in space
satellite
any force that causes an object to move in a circular path
centripetal force
