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Science test
ch. 2 test study guide Cory Williams
Term | Definition |
---|---|
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 |