# Force and Motion-vocab

Mechanics

Nov 13, 2013 (4 years and 6 months ago)

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A push or a pull

A change in position.

I was in
Kansas City.

Now I’m
in St.
Louis

describe motion.

When you watch a runner
he is moving, but the
trees behind him are not.

When you are the runner
everything you pass seems to
be moving.

Motion that is described based on a frame of
reference.

Relative to the trees the
runners are moving.

The trees are also moving
because of the Earth’s rotation,
but they don’t seem to be
moving because there is no
frame of reference.

A certain place

Right of the
bookshelf

Left of the
bookshelf

On top of the
bookshelf

How fast something is moving
-
the measure
of an object’s change in position during a
unit of time.

I can go 100 miles
per hour (MPH) if I
want to.

Any change in speed or direction of an
object’s motion.

Slower

Faster

Curve

Turn

Stop

Start

A unit to measure force.

A force that pulls objects toward each other.
It keeps you on earth.

A force that keeps objects that are touching
each other from sliding past each other
easily.

A measure of the force of gravity on an
object.

I weigh
less on the
moon than
on Earth.

On Jupiter I
weigh twice
as much as
I do on
Earth.