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