acceleration in 1d review

1D Kinematics

Test Your KnowledgeReview Your Knowledge

Reinforce Your Knowledge

There are three types of graphs:

• Position vs. Time– Shows the position of an object over time

• Velocity vs. Time• Shows the rate at which the position of an object changes over

time

• Acceleration vs. Time– Shows the rate at which the velocity of an object changes over time

Position vs. Time

QUANTITATIVE (with numbers)

Velocity vs. Time

QUALITATIVE (without numbers)

Different Velocity-Time Graphs (all show changing velocity)

Do the Dance!!!= sign (+/-) of velocity sign (+/-) of

acceleration =

DIFFERENT SITUATION EXAMPLES OF MOTION

Complete with motion maps

Acceleration vs. Time

Constant Velocity (a=0) Constant Acceleration (a≠0)

Now, test yourself

Look at the following position time graphs, and see if you can describe the motion of the object

represented by the graph in complete statements

Answer

• Constant velocity• Moving in the positive direction• Away from the origin

Answer

• Slowing down in the negative direction• Toward the origin• Stopped for an instant• Turns around• Speeding up in the positive direction• Away from the origin

Answer

• Slowing down in the positive direction• Stops for an instant• Speeding up in the negative direction

Answer

• Slowing down in the positive direction• Away from the origin• Then comes to a stop

Answer

• Speeds up in the positive direction• Away from the origin

Answer

• Slowing down in the negative direction• Toward the origin• Then comes to a stop

Answer

• Stopped -OR-

• Not moving

Answer

• Does not start at the origin• Constant velocity in the positive direction• Away from the origin• Stops for some time• Turns around• Constant velocity in the negative direction• Toward the origin

CHALLENGE QUESTION

(CHALLENGE) Answer

• Slows down in the positive direction• Stops for an instant• Speeds up in the negative direction• Constant velocity in the negative direction• Slows down in the negative direction• Stops for an instant• Speeds up in the positive direction

How’d You Do?

• If you did well, then you’re set!• If you need more practice, check the other

notes/resources on the website and review this presentation