Motion in One Dimension Flashcards
The branch of physics involving the motion of an
object and the relationship between that motion and
other physics concepts
Dynamics
defined as the change in position
Displacement
____ quantities need both magnitude (size) and
direction to completely describe them
Vector
____ quantities are completely described by
magnitude only
Scalar
is defined as the total
distance traveled divided by the total time elapsed
Average Speed
It takes time for an object to undergo a displacement
Velocity
- Changing velocity means an ____ is present
- ____ is the rate of change of the velocity
Acceleration
When the object’s velocity and acceleration are in the
same direction (either positive or negative), then the
speed of the object increases with ____
Time
➢ 1564 - 1642
➢ ____ formulated the laws that govern the
motion of objects in free fall
Galileo Galilei
A freely falling object is any object moving freely
under the influence of gravity alone
Free Fall
➢ Symbolized by g
➢ g = 9.81 m/s2
o When estimating, use g ≈ 10 m/s2
➢ g is always directed downward
o Toward the center of the earth
Acceleration due to Gravity
