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# Science test

### ch. 2 test study guide Cory Williams

TermDefinition
Newtons 1st Law/Law of Inertia objects that are stopped or moving will stay that way until an unbalanced force acts upon them
Newtons 2nd Law An object's mass and net force on it determines its acceleration, or Acceleration=Net Force/Mass
Newtons 3rd Law Actions have equal/opposite reactions
Inertia tendency for an object to resist changes in motion
Momentum characteristic of moving objects related to its mass/velocity, or Momentum=Mass*Velocity
Law of Conservation of Momentum interacting object's momentum doesn't change in the absence of outside forces
Rotational Motion motion on a fixed point
Centripetal Motion circular motion around a fixed motion; satellites orbiting Earth
Projectile Motion arced motion in thrown object
Linear Motion motion in a straight path
Vibrational Motion small, but fast, back and forth movements
unbalanced forces do what to an objects motion? change the objects motion
air resistance is a type of... fluid friction
what type of force is it when 4 children pull on 1 toy but that toy doesn't move? they have equal pulling force or they have created a balanced force
true or false true or false
balanced forces are equal forces acting on an object in opposite directions TRUE
rolling friction occurs when two solid surfaces slide over each other FALSE
the greatest velocity a falling object reaches during free fall is called its momentum
the law of universal gravitation states that the total momentum of objects that interact does not change
the type of force that causes a satellite to orbit Earth is a centripetal force True
Created by: icanhazhi