Section 1
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Last updated
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Date created
Mar 1, 2020
Cards (54)
Section 1
(50 cards)
vector
A quantity that has magnitude and direction
gravitational mass
a property of an object that allows it to interact gravitationally with other massive objects
inertia
the tendency of an object to resist a change in motion
Power
the rate at which work is done
inertial mass
mass associated with resistance to motion
trajectory
the path of a projectile
velocity
change in displacement over time, includes direction
magnitude
amount
weight
force due to gravity
non-equilibrium
forces are unbalanced, object is accelerating
applied force
a force which is applied to an object by a person or another object
kinetic energy
energy of motion
acceleration
change in velocity over time
Period of a pendulum
Tp=2π√l/g
friction force
force that opposes motion of an object when two surfaces are in contact
elastic potential energy
Energy stored by something that can stretch or compress
mechanical energy
Kinetic and/or potential energy associated with the motion or position of an object
equilibrium
forces are balanced, object is at rest or constant velocity
center of mass
the point at which all the mass of the object or system of objects can be considered to be concentrated
impulse (equation)
force x time
unit of energy
Joule (J)
tension force
The force that is transmitted through a string, rope, cable or wire
displacement
change in position of an object, including direction
impulse
change in momentum
force probe
device used to measure force
gravitational potential energy
Energy stored by objects due to their position above Earth's surface.
centripetal acceleration
acceleration of an object toward the center of a curved or circular path
contact time
time during which a force is applied
centripetal force
A force that causes an object to move in a circle
freefall
falling under the influence of gravity alone
law of universal gravitation
every object in the universe attracts every other object
conservation of momentum
the total momentum of a system of objects does not change, as long as no outside forces are acting on that system
mass
the amount of "stuff" something has
momentum
the "quantity" of motion
force diagram (free body diagram)
a diagram showing all the forces on an object
work
force x distance
speed
how fast an object travels
net force
sum of all the forces on an object
scalar
a quantity with magnitude only, no direction
coefficient of friction
a number that depends on the types of surfaces in contact
motion detector
a sensor designed to detect movement within a defined space- used for measuring velocity of an object
normal force
the perpendicular contact force exerted by a surface on another object
gravitational field
a force field that exists in the space around every mass
Period of a Spring
Ts=2π√(m/k)
distance
how far an object travels
Newton's second law
an unbalanced force causes acceleration in the direction of the force
unit of power
Watt (W)
Newton's third law
for every action force there is an equal and opposite reaction force
g
acceleration due to gravity
Law of Inertia (Newton's first law)
an object tends to resist changing its motion unless acted upon by an unbalanced force
Section 2
(4 cards)