Study better. Learn faster. Get the grade you want.
Discover why millions of students use us to learn better.

- StudyBlue
- Texas
- Memorial High School
- Physics Pre ap
- Duke
- Uniform Motion

Sign up now and start studying these cards for FREE

3 ways to describe motion

- Words
- Equations
- Graphs

Scalar

a measurement that has only magnitide and units

Magnitude

how much the numerical value is without positive or negative reference

Direction

the angle an object is being moved in

Vector

a measurement that has both magnitude and direction

Distance

a measurement of the path traveled (scalar)

Displacement

- a measurement of difference in position, it needs no reference points, just the difference in two position points
- vector

Position-Time Graphs

- a tool for showing where an object is located at a precise point in time
- slope is equal to the velocity
- positive slope-object is moving forward
- negative slope-object is moving backwards

Average Velocity

- to find the average velocity, the slope of the line is found between the two points (t1,d1) and (t2, d2)
- average velocity= (d2-d1)/(t2-t1)
- is NOT a mathematical average of all the velocities traveled

Instantaneous Velocity

- how fast the object is going at a particular point n time
- it can vary from the average

Constant Velocity

- when an objects speed or direction does not change as time progresses
- straight line-path with no acceleration

Speed

- the distance traveled in a given amount of time of the event divided by the time of the event
- speed= distance\time
- Scalar
- unites are meters per second

Velocity

- the displacement for a given time period for an event to occur divided by the time of the event
- velocity= displacement/time
- vector
- unites are meters per second with a direction

Reference Point

the zero point, or the orgin

Frame of Reference

the coordinate system, what is considered to be stationary

Position

measure from the reference point

Average Speed

- the entire distance covered by the total travel time
- doesn't indicate various instantanous speeds along the way
- average speed= total distance covered/ travel time

Instantaneous Speed

- the speed at any instant in time
- the slope of a line or curve at any point in time

Constant Speed

a steady speed, not speeding up or slowing down

Acceleration

- rate at which velocity changes over time
- involves change in speed, change in direction, or a change in both
- acceleration=change in velocity/time interval
- a vector
- units: m/s
^{2}

About this deck

Author: Lauren C.

Created: 2011-09-05

Updated: 2011-09-05

Size: 20 flashcards

Views: 7

Created: 2011-09-05

Updated: 2011-09-05

Size: 20 flashcards

Views: 7

Simply amazing. The flashcards are smooth, there are
many different types of
studying tools, and there is
a great search engine. I praise
you on the awesomeness.
- Dennis

I have been getting MUCH
better grades on all my tests
for school. Flash cards, notes,
and quizzes are great on here.
Thanks!
- Kathy

I was destroying whole rain forests with my flashcard production, but YOU, StudyBlue, have saved the ozone layer. The earth thanks you.
- Lindsey

This is the greatest app on my phone!! Thanks so much for making it easier to study. This has helped me a lot!
- Tyson

StudyBlue is not sponsored or endorsed by any college, university, or instructor.

© 2014 StudyBlue Inc. All rights reserved.

© 2014 StudyBlue Inc. All rights reserved.