1. Lesson 1
March 9, 2012

2. Today’s Outline
 FORCE AND MOTION:
 Common Terms
 Force
 Newton’s First Law of Motion

4. Common Terms
 Mechanics – The study of motion of
objects
 Kinematics – The science of describing
motion (through
words, charts, graphs, diagrams, equati
ons etc.) For this class, we will be
looking at Free-Body Diagrams

5.  Speed – Describes how fast an object is
moving
Speed = Distance
time

6. Velocity
Speed of an object in a
certain direction
v = velocity (meters / second)
d = distance (meters)
t = time (seconds)
d
V= t

7. Acceleration is how quickly velocity
changes over a certain time.
change in
Acceleration =
velocity
time
(v2 – v1 )
_______
Acceleration =
_ Time
V1 = beginning velocity
V2 = ending velocity

8. Scalar Quantity:
A measurement that can be fully described by a
magnitude (a numerical value) alone.
Example: Speed, distance, time
Vector Quantity:
A measurement that needs a magnitude as well
as a direction for its description.
Example: Velocity, Force

9. Definition, Categories, Types, and Visual Representation

10. FORCE
 A force is a push or pull upon an object that
occurs because when that object interacts
with another object
 Forces ONLY exist when there is
interaction.
 Keep in mind that objects includes anything
and everything, including the Earth

11.  Measured in Newton
 One Newton is the amount of force
required to give an object of 1Kg an
acceleration of 1 m/s².
 A force is a vector quantity (has to have
a direction)

12. Categories of Force
Two major categories:
1. Contact Force: The types of forces that
occur when two objects are said to be in
physical contact with each other.
2. Action-at-a-Distance Force: Forces that
result even when two interacting objects
are not in physical contact with each other.

13. Contact Forces
 Frictional Force
 Tension Force
 Normal Force
 Air Resistance Force
 Applied Force
 Spring Force