Force and Motion PowerPoint

```Force &amp; Motion
Presentation
Enjoy!
1
forces and motion?
Forces are constantly at work.
Forces cause motion.
Let’s look into this further…
Forces
A force is a push or a pull.
For example, how do you open a door?
You probably push it open and pull it shut (or reverse).
Forces
Have you ever played tug of war?
pull
pull
Forces
Here are some more examples:
Motion
Motion is how an object’s position changes over time.
In other words, movement.
Speed
Speed is a measurement of distance over time.
In other words, how fast or slow something is moving.
For example:
30 miles per hour
measurement
distance
time
Acceleration
Acceleration is a change in motion caused by a
change in speed.
When you speed up, you are accelerating.
Velocity
Velocity is an object’s speed in a particular direction.
If you add a direction to an object’s speed, you are
describing its velocity.
I drove North at 30 miles per hour.
Inertia
Objects remain at rest or in motion unless acted on
by a force.
Example: If a car stops fast, wearing your seatbelt
can cause you to stop moving too. Otherwise, you
would keep moving even if the car stopped.
Gravity
Gravity is the force that pulls objects toward the
center of the Earth.
Example: If an apple falls from a tree, it will fall to
the ground because of gravitational pull.
Friction
Forces that slow down or stop movement.
Example: A golf ball will roll to a complete stop
because the friction of the grass slows it down.
Examples of forces and motion
can be found everywhere you
look! See how many examples
you can identify in your
classroom, at home, or the next
time you are out!
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