a)these b)this c)those  gave him the idea of the pendulum,a device that enabled him to make the clock a scientific instrument for the first time

Galileo also noticed the regular a)swings b)swinging c)swaying of the lamps in Pisa Cathedral

a)to b)of c)with the square of the time it takes to fall

the a)track  b)distance c)path a body falls is proportionate

a)downside b)down over c)down a slope to show that

bodies fall at the a)same b)equal c)similar apeed,but he did roll balls