This document provides an outline for a lesson on force and motion. It defines key terms like mechanics, kinematics, speed, velocity, acceleration, scalar and vector quantities. It then discusses the definition of force, noting that forces only exist due to interactions between objects. It categorizes forces into contact forces, which occur during physical contact between objects, and action-at-a-distance forces, which do not require physical contact. Examples of different types of contact forces are also given.

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