We know that when matter is disturbed,
energy emanates from the disturbance. This
propagation of energy from the disturbance
is know as a wave.
We call this transfer of energy wave motion.
Examples include ocean waves, sound waves,
Description leading to understanding of our
Description involves the measurement of the
Understanding our environment demands the
interpretation of accurate measurements (i.e.,
In chapter 2 we studied motion but not its
In this chapter we will look at both force and
motion the cause and effect.
We will consider Newtons:
Newtons three laws of motion
Newtons law of universal gravitation
Buoyancy and momentum
Electric charge is a fundamental quantity we
dont really know what it is
But we can describe it, use it, control it
Electricity runs motors, lights, heaters, A/C,
stereos, TVs, computers, etc.
Electric Forces at the microscopic level they
Physics is concerned with the basic principles
that describe how the universe works.
! Physics deals with matter, motion, force, and
! Waves and sounds
! Quantum mechanics
Work - the product of the magnitude of the
force (F) and the parallel distance (d) through
which the object moves
work = force x parallel distance
W = Fd
Mechanically, work involves both force and