Do you know your vocabulary?
the location of an object
position
the mass of an object multiplied by its velocity
momentum
a machine that changes the direction, the distance, or the strength of one force; it makes work easier
simple machines
Speeding up is called...
accelerating! *SHOW
When you go for a walk, you are using...
energy!
a change in an objects position over time
motion
a push or pull on an object
force
a combination of two or more simple machines
compound machine
Slowing down is called...
decelerating. *SHOW
When you move faster, you are picking up
momentum!
how fast an objects position changes with time at any given moment
speed
a force that opposes the motion of an object
friction
What is one example of a simple machine?
wedge
Carpet can cause...
friction. *SHOW
___________________ can be slow or fast.
speed!
the speed and direction of a moving object
velocity
the use of force to move an object a certain distance or change an object
work
What is one example of a compound machine?
motor/engine
To be moving is to be in...
motion! *SHOW
If you rolled a pencil and a marble down the hallway with the same amount of force, which would roll further? Why?
The marble because it is round and the pencil has edges that slow it down.
a change in velocity with respect to time
acceleration
the ability to perform work or change an object
energy
wheel and axle--simple or compound machine
simple
When you push or pull something you are using....
force. *SHOW
Which would fall faster from a cliff--a car or a jug of milk?
Hmmmmmm...