6 Main Ideas
Week 2
Introduction to One-Dimensional Motion
Concept Map of the Week
Note: image by Chudaeva, E. (2022).
Concept Trailer
One-Dimensional Kinematics
Watch this video.
Then watch the video again and answer the following questions:
- What have you noticed about the rocket takeoff?
- How can you describe the rocket’s landing?
- What are the definitions of rocket’s velocity and acceleration?
- At the point 1 min 13 sec, three kinematics graphs are created, which part of the rocket motion they describe?
- Do they describe takeoff and hovering (landing)?
- Draw the three kinematic graphs to include takeoff and landing.
Key Terms
Review the following key terms (Glossary chapter 2):
acceleration
the rate of change in velocity; the change in velocity over time
acceleration due to gravity
acceleration of an object as a result of gravity
average acceleration
the change in velocity divided by the time over which it changes
average speed
distance traveled divided by time during which motion occurs
average velocity
displacement divided by time over which displacement occurs
dependent variable
displacement divided by time over which displacement occurs
displacement
the change in position of an object
distance
the magnitude of displacement between two positions
distance traveled
the total length of the path traveled between two positions
elapsed time
the difference between the ending time and beginning time
free-fall
the state of movement that results from gravitational force only
independent variable
the variable that the dependent variable is measured with respect to
instantaneous acceleration
acceleration at a specific point in time
instantaneous speed
magnitude of the instantaneous velocity
instantaneous velocity
velocity at a specific instant, or the average velocity over an infinitesimal time interval
kinematics
the study of motion without considering its causes
position
the location of an object at a particular time
scalar
a quantity that is described by magnitude, but not direction
time
change, or the interval over which change occurs
vector
a quantity that is described by both magnitude and direction
More terms can be found in the textbook Glossary.
