Newton 3 laws of motion
Terms in this set (40)
quantities that are fully described by a magnitude (or numerical value) alone.
quantities that are fully described by both a magnitude and a direction.
a scalar quantity that refers to "how much ground an object has covered" during its motion.
a vector quantity that refers to "how far out of place an object is"; it is the object's overall change in position.
a scalar quantity that refers to "how fast an object is moving."
a vector quantity that refers to "the rate at which an object changes its position
a vector quantity that is defined as the rate at which an object changes its velocity.
Newton's First Law
An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.
the resistance an object has to a change in its state of motion.
a premier scientist in the seventeenth century, developed the concept of inertia. He reasoned that moving objects eventually stop because of a force called friction
Equilibrium / balanced / no acceleration
If two individual forces are of equal magnitude and opposite direction, then the forces are said to be balanced.
A push or a pull
are those types of forces that result when the two interacting objects are perceived to be physically contacting each other.
Action at a distance forces
are those types of forces that result even when the two interacting objects are not in physical contact with each other, yet are able to exert a push or pull despite their physical separation.
List contact forces
Frictional Force. Ffrict
Tension Force. Ftens
Normal Force. Fnorm
Air Resistance Force. Fair
Applied Force. Fapp
Spring Force. Fspring
Buoyancy Force. Fbuoy
List Action at a distance forces
Gravitational Force. Fgrav
Electrical Force. Felect
Magnetic Force. Fmag
is a force that is applied to an object by a person or another object.
the support force exerted upon an object that is in contact with another stable object.
the force exerted by a surface as an object moves across it or makes an effort to move across it.
Air resistance force
a special type of frictional force that acts upon objects as they travel through the air.
the force that is transmitted through a string, rope, cable or wire when it is pulled tight by forces acting from opposite ends.
the force exerted by a compressed or stretched spring upon any object that is attached to it.
The force that a more dense fluid or gas exerts on a less dense fluid or gas.
the force with which the earth, moon, or other massively large object attracts another object towards itself.
The force exerted when electrons move.
The force of attracting or repelling charges.
refers to the amount of matter that is contained by the object.
the force of gravity acting upon that object.
Freebody Diagram. 1. A book is at rest on a tabletop.
Freebody Diagram. 2. A girl is suspended motionless from the ceiling by two ropes.
Freebody Diagram. 3. An egg is free-falling from a nest in a tree. Neglect air resistance.
Freebody Diagram. 4. A flying squirrel is gliding (no wing flaps) from a tree to the ground at constant velocity. Consider air resistance.
Freebody Diagram. 5. A rightward force is applied to a book in order to move it across a desk with a rightward acceleration. Consider frictional forces. Neglect air resistance.
Freebody Diagram. 6. A rightward force is applied to a book in order to move it across a desk at constant velocity. Consider frictional forces. Neglect air resistance.
Freebody Diagram. 7. A college student rests a backpack upon his shoulder. The pack is suspended motionless by one strap from one shoulder.
Freebody Diagram. 8. A skydiver is descending with a constant velocity. Consider air resistance.
Freebody Diagram. 9. A force is applied to the right to drag a sled across loosely packed snow with a rightward acceleration. Neglect air resistance.
Freebody Diagram. 10. A football is moving upwards towards its peak after having been booted by the punter. Neglect air resistance.
Freebody Diagram. 11. A car is coasting to the right and slowing down. Neglect air resistance.
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