問題一覧
1
refers to the object resistance to motion relative to the surface it is sliding against.
friction
2
used to determine the work done by a force on a system
concept of dot/scalar product
3
force exerted upon an object by a surface, such that the force is parallel to it
friction force
4
responsible for attracting 2 objects that have MASS, or the amount of matter available in object.
gravitational force
5
scalar product of vectors
force and velocity
6
the type of friction exerted on an object when it is sliding on a surface, such that the two surfaces are moving with respect to each other.
coefficient of kinetic friction
7
keeps the atoms from seperating together due to the electric force from the repulsion of the protons
strong nuclear force
8
refers to the force exerted upon an object by the surface with which it is in contact with
normal force
9
the rate at which force does work when time approaches
instantaneous power
10
states that the total energy of a system neither increases or decreases, rather, it only gets changed from one form to another
law of the conservation of energy
11
uniform circular motion is also called?
centripetal acceleration
12
states that if an object A applies a firce on object B, object B applies a force on object A such that the two forces comprise a respective ACTION AND REACTION PAIR
newton's third law of motion
13
the vector for VELOCITY and the vector for ACCELERATION are always
perpendicular
14
act between objects that are distant and are seperated by vacant space
noncontact forces
15
occurs when an object traverses a circular path with constant speed
uniform circular motion
16
forces that generate work which DEPENDENT on the path taken by the object.
nonconservative forces
17
present in an isolated system remains unchanged if there is no friction involved.
conservation of mechanical energy
18
a force applied to an object by a person or another object
applied force
19
implies that the value of a quantity has remained unchanged or constant over time
conservation
20
responsible for the repulsion or attraction between moving charged particles
magnetic force
21
between electric charge can either be attractive or repulsive.
electromagnetic forces
22
the magnitude of a acceleration is ____________ to the magnitude of the net external force exerted on an object of a given mass.
directly proportional
23
interaction that brings about a direct physical contact between two objects
contact force
24
signified by the greek letter w, refers to the number of revolution completed by an object AROUND its circular path
rational speed
25
found in radioactive process
weak nuclear force
26
a vector diagram that illustrates the overall picture of thw magnitude and direction of the forces that influence an object in a given scenario.
free body diagram
27
number of revolutions in a unit of time, and PERIOD/TIME (t)
frequency (f)
28
is a force opposite the relative motion of the object as it moves through the air
air resistance force
29
the energy in the form of motion
kinetic energy
30
means "seeking the center"., refers to a force that is directed toward a fixed focal point
centripetal force
31
refers to the speed of an object ALONG its circular path.
tangential speed
32
occurs when there is no relative motion between 2 surfaces.
static friction
33
equivalent to the square of the speed divided by the radius r the circular path. the direction is perpendicular to the velocity and directed toward the circle's center.
magnitude of acceleration
34
a force exerted by a compressed or stretched spring to an object
spring force/restoring force
35
referred to as the pull or push exerted upon an object as it interacts with another object.
force
36
the SI unit of mass
kilogram
37
work is done on an object when it
accelerates or decelerates
38
refers to any object that has an initial velocity, but oroceeds through a path called a TRAJECTORY.
projectile
39
pulling force exerted upon an object by a cord it is attached to
tension force
40
the rate of doing work
power
41
one important application of friction
fluid resistance
42
refers to a change in velocity.
acceleration
43
are forces that generate work that depends on the initial and final position of the object
conservative forces
44
exerted by one electric charge to another, both for stationary and moving charges
electric force