Aristotle believed that, for an object to be in motion, there had to be a force acting on it and that the velocity the object experienced was proportional to the force acting on it. was aristotle correct in this belief?

What is the earliest point in the universe that we can observe? why can’t we see back further than this?

Anybody wanna ? (picture included? )

Aball with a mass of 275 g is dropped from rest, hits the floor and rebounds upward. if the ball hits the floor with a speed of 2.40 m/s and rebounds with a speed of 1.70 m/s, determine the following. (a) magnitude of the change in the ball's momentum (let up be in the positive direction.)