Work and Energy
Kinetic energy: KE = mv2; units
Work-kinetic energy theorem
Provides a link between force and
The work, W, done by a constant
force on an object is defined as the
product of the
The Laws of Motion
Newtons first law, inertia
Newtons second law (F=ma)
Newtons third law
Law of gravitation (F=Gm1m2/r2)
Describes the relationship between the
Potential Energy and
Conservation of Energy
PE = mgh (gravitational, local)
PE = -GmM/r (gravitational, general)
PE = kx2 (spring)
Conservation of energy
Potential energy is associated with
Pre-Reading Questions for Chapter 2
1. A ball is thrown downward (not dropped) from the top of a tower. After being released, its
downward acceleration will be
a. Greater than g.
b. Exactly g.
c. Smaller than g.
2. Without air resistance, an object droppe
Vectors in Physics
Components of a Vector
Parabolic Trajectory of Projectiles
Video on water fountain at Detroit International Airport
Copied from Biomedical Applications
of Introductory Physics by J.A.
Kinematics of free falling bodies in
The horizontal and vertical motions
are completely independent of each
other. This means that motion in
one direction has no effect on
motion in the othe
Copied from Physical Biology of the Cell by Rob Phillips, Jane Kondev, Julie Theriot, and Nigel Orme,
Garland Science (2009).
Velocity (average, instantaneous)
Kinematics for freely falling
Pre-Reading Questions for Chapter 1
1. A rectangular building lot has a width of 75.0 ft. Determine the width in meters.
2. How many significant figures are there in 0.7080 m?
3. Express 3.31 * 10-9 m using a prefix listed in the textbook.
4. Which part(s
Introduction to Physics
Physics and the Laws of Nature
Physics: the study of the fundamental laws of nature
The goal of physics is to develop theories based on
A theory is a guess, expressed mathematically,