Class on 1/7

today in class we focused a lot on the concept the force of gravity on any two objects will cause them to fall at the same time, despite weight or mass differences.This is because gravity will only exert as much force on and object as it exets on the earth, by having mass orweight. So a light object falling will only exert a small force on the earth, and will only get or require a small reactional gravitational force to make it fall. For a hevy oject, this is true except that it will exert more force on the earth and thus require a greater gravitationl force to be exerted on it. But the objects will fall at the same tie because the gravitatioal forces are different, because the heavier object requires more just to fall at the speed of the light object
Also, we rached the concuion that dropping and object and throwing the same mass object from the same height, without upwards trajectory will result in both object hitting the ground at the same time. Thisis because an objects horizontal motion wil nt affect its vertical motion, so the thrown object will fall at the same time as th oher ball which is dropped, no matter how fast it is going horizontally