2. MOVEMENT
In this slide I will cover physics describing
motion.
Motion
Forces
Energy
3. MOVEMENT
Motion is ‘’the act, process, or result of
moving’’~ dictonary.com.
Movement is when something is in motion. For
example this ball.
4. MOVEMENT
The ball is moving across, what ever it is on,
such as a floor, the grass, or in the air. When
the ball starts going faster, this is what’s
called acceleration.
Acceleration is the time rate of change of an
objects velocity.
Acceleration Is ONLY the time rate of change,
nothing else. Be sure not to get it confused
with velocity.
5. MOVEMENT
Velocity is the speed and direction traveled.
This can change in three ways:
Object Speeds Up
Object Slows Down
Object Changes Direction
Speed is how fast your object moves.
Velocity is how fast and what in direction.
6. MOVEMENT
We use velocity and speed a lot when we are
in the car. The car will do all of three things; it
will speed up, it will slow down, and it will
also change direction. Your speed is telling
you how fast your car is going.
When the driver presses on
gas pedal the car will
accelerate, or move up in
speed.
7. MOVEMENT
Speed is the distance travelled divided by
time traveled.
8. MOVEMENT
For example let’s say you were driving from
Chesapeake Virginia to a place that was 78 miles
away. You know it took you 1.2 hours to get there,
and you would like to know how many miles per
hour you traveled at. You divide 78 into 1.2 to get
65 miles per hour.
9.
10. MOVEMENT
In the next couple of slides we will learn the
definition of the following terms:
Reference point
Vector quantity
Scalar quantity
Acceleration
Free fall
11. 1Reference point: A point
against which position is
measured.
4+3 One sunny summer day
you go out side and set a toy
on a picnic table. You walk a
couple feet away and turn
around. The toy hasn’t moved,
from your view. But an
astronaut on the moon says
that it looks like it is moving.
That’s because the earth
moves in a circle motion. The
astronaut was standing on a
moon with no motion. You and
the toy were moving from his
point of view.
MOVEMENT
12. 1Vector quantity: a
physical measurement
that contains directional
information
Vector quantity is a
physical measurement
used to measure speed
and velocity. Like our car
in the example above
we measured how many
hours by how many
miles. Then we got our
answer in speed.
MOVEMENT
14. 1Acceleration: the
time rate of
change of an
objects velocity.
Acceleration=
finial velocity
subtracted by
initial velocity
divided by time.
MOVEMENT
15. 1Free fall: the motion of an
object when it is falling
solely under the influence
of gravity.
If you drop an item this is
called a free fall.
A local amusement park (
Busch Gardens) has a new
ride called mach tower.
Mach tower is a free fall
ride. The round circle seats
that go around the ride fall
with no impact from the top
(245 feet up) of the ride to
the bottom.
16. MOVEMENT QUIZ
5What is the speed of a boat that travels 10
miles in 30 minutes? 3 miles per hour
9 If an object travels for 15 minutes with a
constant velocity of 12 miles per hour west,
what is the acceleration? .8
