SCIENCE (NATURE OF FORCE) Flashcards
review
A push or a pull exerted by one object on another body.
The effect of force is to tend to change the state of motion of the body on which it acts.
It is a vector quantity
Represented by SI unit “N
FORCE
Ordinary push and pull forces and friction
NON-FUNDAMENTAL FORCES
Gravitational Force, Magnetic Force, Strong Nuclear Force, and Weak Nuclear Force
FUNDAMENTAL FORCES
The force of attraction between objects by virtue of their masses and is responsible for weights of the bodies on Earth as well as the motion of the planets
GRAVITATIONAL FORCE
Plays a role in the radioactive decay of some nuclei
WEAK NUCLEAR FORCE
An attractive or repulsive force between charged bodies
ELECTROMAGNETIC FORCE
A force that holds the constituents of the nucleus of an atom together
STRONG NUCLEAR FORCE
forces that result from direct physical contact between two objects.
CONTACT FORCES
the quantity of matter a body contains
MASS
forces that do not involve direct physical contact
NON-CONTACT FORCE
MASS IS A WHAT QUANTITY?
SCALAR
SI UNIT FOR MASS?
KG
the force on a body due to gravity
WEIGHT
WEIGHT IS WHAT QUANTITY?
VECTOR
SI UNIT FOR WEIGHT?
N- NEWTON
is capable of changing the state of motion of an object.
NETFORCE
is the rate of change in velocity of a moving object per unit of time
ACCELERATION
is the description of the motion of an object in terms of both speed and direction.
VELOCITY
are equal forces acting in opposite directions; thus, they have zero net force.
BALANCE FORCE
has nonzero net force; thus it produces acceleration
UNBALANCE FORCE
EXAMPLES OF BALANCED FORCE
Resting against a wall.
Lying down.
Aircraft in a steady-flight.
Floating in water.
Standing in ground.
Tug of war equally balanced teams.
Fruit hanging from a tree.
Ball hanging from a rope.
EXAMPLE OF UNBALANCE FORCE
A group of kids winning a tug of war game,
A car accelerating, braking, or turning,
An object sinking in water,
Riding a skateboard,
Turning a cartwheel,
A fruit dropping from a tree,
A moving train that slows down prior to its station,
An object getting knocked over by the wind, and
An aircraft in a steady flight.
