PHYS 220 Exam (with Errorless answers)
Kinematics correct answersThe study of how objects move
Motion correct answersthe change in an object's position relative to a given observer during a
certain time interval
position correct answersan object's location with respect to a particular coordinate system
Displacement correct answersa vector that starts from an object's initial position and ends at its
final position
Distance correct answersThe magnitude of the displacement vector
Path length correct answersHow far the object moved as it traveled from its initial position to its
final position
Reference frame correct answerscontains a coordinate system, scale, and clock
velocity correct answersthe slope of the position vs. time graph
has both magnitude and direction
Speed correct answersthe magnitude of the velocity
Acceleration correct answersThe slope of the velocity vs. time graph
System correct answersthe object
System environment correct answersobjects not a part of the system but interact with the system
External factors correct answersFactors that affect the motion of the system object
Force correct answersvector quantity that characterizes how hard and in what direction an
external object pushes or pulls on a system object
Normal force correct answersforces that are perpendicular to the surface of the object
Net force correct answersthe sum of the forces on an object
inertial reference frame correct answersframe in which there is a constant velocity. Observer sees
that the velocity of the system doesn't change
non-inertial reference frame correct answersframe when the velocity of the system objects can
change even though the sum of forces exerted on it is zero
Kinematics correct answersThe study of how objects move
Motion correct answersthe change in an object's position relative to a given observer during a
certain time interval
position correct answersan object's location with respect to a particular coordinate system
Displacement correct answersa vector that starts from an object's initial position and ends at its
final position
Distance correct answersThe magnitude of the displacement vector
Path length correct answersHow far the object moved as it traveled from its initial position to its
final position
Reference frame correct answerscontains a coordinate system, scale, and clock
velocity correct answersthe slope of the position vs. time graph
has both magnitude and direction
Speed correct answersthe magnitude of the velocity
Acceleration correct answersThe slope of the velocity vs. time graph
System correct answersthe object
System environment correct answersobjects not a part of the system but interact with the system
External factors correct answersFactors that affect the motion of the system object
Force correct answersvector quantity that characterizes how hard and in what direction an
external object pushes or pulls on a system object
Normal force correct answersforces that are perpendicular to the surface of the object
Net force correct answersthe sum of the forces on an object
inertial reference frame correct answersframe in which there is a constant velocity. Observer sees
that the velocity of the system doesn't change
non-inertial reference frame correct answersframe when the velocity of the system objects can
change even though the sum of forces exerted on it is zero
