1.what motion that is arising from the nature of an object? A.natural motion B.violent motion C.project motion D.free fall 2.what motion that the result if forces is pushed or pulled? A.natural motion B.violent motion C.projectile motion D.free fall 3.what motion that an object can move freely in absence of friction? A.natural motion B.violent motion C.projectile motion D.horizontal motion 4.which is the unit for speed? A.m B.km C.km/h D.s/m