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