The push or pull that can change the motion of an object
matter
friction
iron
force
a contact force that opposes the motion of an object.
speed
friction
magnet
iron
a noncontact force that pulls masses towards one another
gravity
position
friction
mass
a kind of metal that is magnetic
mass
iron
speed
gold
something that pulls iron and some other metal objects toward it
iron
gold
magnet
silver
the amount of matter in an object. Objects with more matter have more.....
mass
darkness
light
brightness
a hard metal that is made mostly from iron
steel
silver
diamond
gold
the action or process of changing position
singing
laughing
motion
dancing
A roller coaster has ....................
no speed
variable speed
unchangeable speed
constant speed
a plane has a ................
variable speed
no speed
constant speed
changeable speed
