Download Newton`s Universal Law of Gravity

Newton’s Universal Law of Gravity
Sir Isaac Newton ( did / did not ) discover gravity:
g stands for: ________________________________
G is the universal ______________________. It is basically a conversion factor to adjust the number and units so they
come out to the correct value. This is a universal constant so it is true everywhere.
If the cannon ball was given
enough ______________, it could
go around the world before falling
to Earth. This is called the
____________________and the
cannon ball would be put into
_________________ around
earth.
Newton theorized that the force of gravity between to bodies was dependent on
________________________________________________________________________________
Therefore:
The Law of Universal gravitation States that EVERY OBJECT IN THE UNIVERSE ________________EVERY OTHER
OBJECT IN THE UNOVERSE WITH A FORCE DIRECTED ALONG THE LINE OF THE CENTERS OF THE TWO
OBJECTS THAT IS PROPORTIONAL TO THE _____________________________ AND INVERSELY PROPRTIONAL TO
THE SQUARE OF THE ___________________________________________
Friction: always ______________ motion

Can act on a surface or in the air (known as ___________ ____________)

When you match friction, the net force becomes ________, and the object slides at a constant
________________________________.
o The sum of the forces becomes zero.
Why objects fall at the same rate:

You must not only look at weight, but at mass.

Pay attention to the F/m ratio; it will always equal ___________________________.
Air drag will affect the rate of acceleration of objects because of _________________ and
____________________________________.
Free fall= ________________________________ force in a vacuum, but _____________________ force in air.
Downward force = weight- air drag
____________________ velocity: when air drag equals weight, therefore there is no more acceleration. The object no
longer picks up speed and reaches its terminal speed. The terminal velocity is less with air drag.