FM Unit: Force & Motion In Our World Flashcards
Overview
Motion can be described by these three (3) things…
- Postition
- Direction of Motion
- Speed
Overview
All motion is relative to…
…the reference point the observer chooses
MW1
Science
Systematic knowledge of the universe gained through predictions, observation and experimentation
MW1
Technology
Design, development, and application of applying scientific or technical knowledge
MW2
Frame of Reference
The point or object of comparison when deciding if an object is in motion
MW2
Uniform Motion
Motion at a CONSTANT speed in a straight line
MW3
Rate of Change
A measure of how fast a quantity changes per unit of time
MW3
Position
An object’s location relative to a reference point
MW3
Distance = d
Length of path traveled between two points
MW3
Speed = velocity = v
Rate of change of distance of an object; distance compared to time
MW3
Instantaneous Speed
The actual speed of an object at a particular instant in time
MW3
Instantaneous Speed Equation
v = d / t
MW3
Average Speed = vav
Rate of change in distance over a time interval for a moving object; CHANGE in distance compared to CHANGE in time
MW3
Average Speed Equation
v = ∆d / ∆t
MW4
Acceleration = a
Rate of change of an object’s speed; CHANGE in speed compared to CHANGE in time
MW4
Acceleration can be a change in either…
- Magnitude of speed
- Change in direction of speed
MW4
Acceleration Equation
a = ∆v / ∆t
MW4
Models
Simplified representations of real phenomena that facilitate a better understanding of scientific concepts of principles
MW4
Hypothesizing
A tentative generalization that may explain events that can be tested with an experiment
MW5
How To Read Uniform Motion On A Distance-Time Graph
Appears as a straight, sloped line
MW5
How To Read Uniform Motion On A Speed-Time Graph
Appears as a straight, horizontal line
MW5
Slope on a Distance-Time Graph represents…
Speed of the object
MW5
Equation for Uniform Motion
vav = ∆d / ∆t
MW5
How To Read Uniform Accelerated Motion
On A Distance-Time Graph
Appears as a parabola
MW5
How To Read Uniform Accelerated Motion
On A Speed-Time Graph
Appears as a straight, sloped line
MW5
Slope on a Speed-Time Graph represents…
Acceleration
MW5
Area UNDER a speed-time graph represents…
The change in distance of the object
MW5
Equation for Uniform Accelerated Motion
a = ∆v / ∆t
