Kinematics 2D Vocabulary and Concepts Review

Vectors are quantities with

• both magnitude and direction

• magnitude only

• direction only

Observers using different ___________________ may measure different velocities for an object in motion

• frame of reference

• relatives of motion

• projectile motions

• constant velocity

For us humans (and in AP Physics), what is our basic reference frame?

• Earth

• The Sun

• The Universe

• The Milky Way Galaxy

A place or object used for comparison to determine if another object is in motion is called a

• comparison point

• reference frame

• point of view

• motion detector

An object that is launched and is acted by gravitational force alone is called the

• point mass

• cannonball

• rocket

• projectile

Tags

NGSS.HS-PS2-4

What are the characteristics of the vertical and horizontal motions of a projectile? Check all that apply.

• The vertical and horizontal motion are independent of each other

• The time interval is the same for both.

• As the projectile goes up, the acceleration of vertical motion increases while the acceleration of horizontal motion decreases.

• The vertical motion has constant velocity while the horizontal motion has constant acceleration.

The vertical motion of a projectile is characterized by the motion of a free-falling body.

• True

• False

• Insufficicent information to answer

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-4

The acceleration in the horizontal motion of a projectile is a constant non-zero value.

• True

• False

• Insufficient information to answer

The acceleration of a projectile in its vertical motion is

• zero

• equal to g

• decreasing on its way up and increasing on its way down

• dependent on the given

Tags

NGSS.HS-PS2-1

The acceleration of a projectile in its horizontal motion is

• zero

• equal to g

• decreasing on its way up and increasing on its way down

• dependent on the given

Tags

NGSS.HS-PS2-1