Topic 1.2: Displacement, Velocity, and Acceleration

Front

What is ignored when using the object model?

Back

The size, shape, and internal configuration are ignored. The object may be treated as a single point with extensive properties such as mass and charge.

Front

What is displacement?

Back

Displacement is the change in an object’s position.

Front

How are averages of velocity and acceleration calculated?

Back

Averages of velocity and acceleration are calculated considering the initial and final states of an object over an interval of time.

Front

What is average velocity?

Back

Average velocity is the displacement of an object divided by the interval of time in which that displacement occurs.

Front

What is average acceleration?

Back

Average acceleration is the change in velocity divided by the interval of time in which that change in velocity occurs.

Front

When is an object accelerating?

Back

An object is accelerating if the magnitude and/or direction of the object’s velocity are changing.

Front

What happens when calculating average velocity or acceleration over a very small time interval?

Back

Calculating average velocity or average acceleration over a very small time interval yields a value that is very close to the instantaneous velocity or instantaneous acceleration.