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