Gravity Flashcards
What’s gravity
natural force of attraction in the universe
What does air resistance cause
certain objects to fall at different rates
Where is there no air, but gravity is present?
The moon
A vaccum
Gallileo’s theory?
Objects fall at different rates bc of air
Proved during the Apollo 15 mission
Effect of gravity on acceleration
Gravity causes an acceleration
V
__ = a
t
What is free fall?
Nothing is acting on an object except gravity
Acceleration due to gravity is constant..?
near the surface of the earth
acceleration due to gravity
9.81 m/s^2
Varies depending on the location (high in the mountains, the moon
(If there is no air) Relationship between air resistance and velocity?
The force of air resistance increases as the velocity of the body increases
What is air resistance?
frictional force of air
Terminal velocity?
When air resistance equals the magnitude to the weight of the body
Graph of free fall in no air…
constant vt graph
Graph of free fall in air
curved line on a vt graph
For free fall problems, it is always given that..
Vi=0
a= 9.81 m/s^2
In all free fall problems, what is vit equal to?
0
