Unit 7: Forces
How do balanced and unbalanced forces affect motion?
Vocabulary
motion: something changing position
frame of reference: the background of motion that appears stationary; helps us detect motion
force: a push or pull that one object exerts on another object
net force: the combination of all the forces acting on an object.balanced force: does not change the motion of the object (Object continues doing what it is doing.) Ex. Parked car, earth spinning on it’s axis; net force equals zero
unbalanced force: Changes the motion of the object; the net force is not zero.
gravity: force of attraction between any two objects. Dependent upon mass and distance.
friction: a contact force that resists the motion of two surfaces that are touching.
motion: something changing position
frame of reference: the background of motion that appears stationary; helps us detect motion
force: a push or pull that one object exerts on another object
net force: the combination of all the forces acting on an object.balanced force: does not change the motion of the object (Object continues doing what it is doing.) Ex. Parked car, earth spinning on it’s axis; net force equals zero
unbalanced force: Changes the motion of the object; the net force is not zero.
gravity: force of attraction between any two objects. Dependent upon mass and distance.
friction: a contact force that resists the motion of two surfaces that are touching.
SUMMARY
When forces acting on an object cause the object to move, they are unbalanced. This also means the net force is equal to something great than zero. When an object is not changing motion, this means the forces are balanced or that there is a net force equal to zero.
In Newton's first law it states that an object at rest will remain at rest and an object in motion will remain in motion unless an unbalanced force acts upon these objects. This means that a net force greater than zero must act on an object to change it's behavior, speed, or position.
When forces acting on an object cause the object to move, they are unbalanced. This also means the net force is equal to something great than zero. When an object is not changing motion, this means the forces are balanced or that there is a net force equal to zero.
In Newton's first law it states that an object at rest will remain at rest and an object in motion will remain in motion unless an unbalanced force acts upon these objects. This means that a net force greater than zero must act on an object to change it's behavior, speed, or position.
How do Newton's Laws of Motion related to the movement of objects?
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