Study Guide:
Chapter 10 Forces
1.
Forces
A.
A force is a push or a pull.
B.
Net force is a combined force.
C.
Unbalanced and Balanced forces
D.
Force as a vector quantity
E.
Force is measured in Newtons. A Newton is equal to about .22 pounds
or 102 grams.
2.
Friction Force
A.
Friction is a force that acts opposite to
a push or a pull.
B.
When one surface interacts with another
surface.
C.
Four types of friction
D.
Know what type of friction is being used
in a situation and if you are trying to increase or decrease friction.
3.
Elastic Force
A.
Tension is a pulling elastic force
B.
Compression is a pushing elastic force
4.
Gravity
A.
Gravity is a property of matter. The more
matter and the closer you are to the matter, the greater the gravitational
pull. The denser the object, the
more gravitational pull.
B.
Gravity is the force that pulls all
objects toward Earth.
C.
Free fall is when the only force
accelerating an object is gravity.
The acceleration due to gravity on Earth is 9.8 m/s2.
D.
All objects fall at the same rate on Earth
(as long as air friction is removed).
E.
Monkey and the Hunter – Gravity is
separate from forward motion so a shot object and a dropped object will fall at
the same rate. Think running off a
cliff vs. stepping off a cliff.
