Galileo used more doubtful arguments to displace Aristotle's physics, proposing that bodies all fall at the same speed whatever their weight.
ɡˌælᵻlˈeɪoʊ jˈuːzd mˈoːɹ dˈaʊtfəl ˈɑːɹɡjuːmənts tə dɪsplˈeɪs ˈæɹɪstˌɑːɾəlz fˈɪzɪks, pɹəpˈoʊzɪŋ ðæt bˈɑːdiz ˈɔːl fˈɔːl æt ðə sˈeɪm spˈiːd wʌtˈɛvɚ ðɛɹ wˈeɪt.