PHY105P Lesson 3 Flashcards
(22 cards)
branch of physics that deals with the effects of forces on an object. It combines kinematics and dynamics
mechanics
deals with the concepts that are needed to describe motion
kinematics
deals with the effect that forces have on motion
dynamics
motion along a straight line
one-dimensional (1D) motion
Simplest case of a motion to study
Considering objects to travel along a flat and narrow straight line
The object is considered as a point
one-dimensional (1D) motion
a physical entity to which the motion and position of objects are referred
reference frame
the total path taken/traveled by an object
distance
distance (scalar vs vector)
scalar quantity
measure of an object change in position relative to a reference point from the initial position to the final position
displacement
displacement (scalar vs vector)
vector quantity
the distance over time, how fast or slow an object moves regardless of the directions
Speed
Speed (scalar vs vector)
scalar quantity
displacement over time, how fast or slow an object moves with consideration of the initial and final position and the direction the object travels
velocity
Velocity (scalar vs vector)
Vector quantity
the distance traveled divided by the time required to cover the distance
average speed
displacement divided by the elapsed time
average velocity
indicates how fast an object moves and the direction of motion at each instant of time
instantaneous velocity
a change in velocity is combined with the time during which the change occurs
acceleration
constant vertical acceleration downwards
free fall
acceleration of a freely falling body
acceleration due to gravity
motion of an object or projectile traveling into the air
projectile motion
the parabolic path that the object thrown will follow
trajectory
