The earth is moved from its position by the weight of a tiny bird resting upon it.
Of all the intellectual hurdles which the human mind has confronted and has overcome in the last fifteen hundred years the one which seems to me to have been the most amazing in character and the most stupendous in the scope of its consequences is the one relating to the problem of motion.
It's physics. Pure physics, I'm falling fast and faster still. So fall with me. Fall down with me. And stay.
A fall from such a height is rarely straight downwards.
We may stop ourselves when going up, never when coming down.
... everything in the world is a force, a pull or a push. In order for us to be pushed or pulled we need to be like a sail, like a kite in the wind. But if we have a hole in the middle of our luminosity, the force goes through it and never acts upon us.
I work out every morning for an hour while in front of the news channel or business channels, then I'll ride for four, five hours a day. So I'm on the move all the time, and I think that's the key. A body in motion tends to stay in motion. That's the law of physics.
If a projectile were deprived of the force of gravity, it would not be deflected toward the earth but would go off in a straight line into the heavens and do so with uniform motion, provided that the resistance of the air were removed.
Falling is one of the ways of moving.
...from the same principles, I now demonstrate the frame of the System of the World.
Acceleration is finite, I think according to some laws of physics.
My physics teacher, Thomas Miner was particularly gifted. To this day, I remember how he introduced the subject of physics. He told us we were going to learn how to deal with very simple questions such as how a body falls due to the acceleration of gravity.
One small ball in the air. I wouldn't believe that at this moment you have to fear the intelligence aspects of this.
Resistance is usually ascribed to bodies at rest, and impulse to those in motion, but motion and rest, as commonly conceived, are only relatively distinguished; nor are those bodies always truly at rest, which commonly are taken to be so.
Any schoolboy could see that man as a force must be measured by motion, from a fixed point.
We're used to thinking of force as a stable phenomenon, but it has a cinematic variable, which is acceleration.
Weight, force and casual impulse, together with resistance, are the four external powers in which all the visible actions of mortals have their being and their end.
Effort supposes resistance.
It is indeed a matter of great difficulty to discover, and effectually to distinguish, the true motions of particular bodies from the apparent because the parts of that immovable space, in which those motions are performed, do by no means come under the observation of our senses.
I can see the first apple teetering when I let the third arrow go, catching the torn flap and ripping it from the bag. For a moment, everything seems frozen in time. Then the apples spill to the ground and I'm blown backward into the air.
In bodies moved, the motion is received, increased, diminished, or lost, according to the relations of the quantity of matter and velocity; each diversity is uniformity, each change is constancy.
The alternation of motion is ever proportional to the motive force impressed; and is made in the direction of the right line in which that force is impressed.
Bowling is all physics and energy distribution. It's F = ma. So it is actually one of the most science-y sports, because it literally is just a ball and a surface and objects to knock down.
As three laws were good enough for Newton, I have modestly decided to stop there.
It seems safe to look forward to the time when the conception of attractive and repulsive forces, having served its purpose as a useful piece of scientific scaffolding, will be replaced by the deduction of the phenomena known as attraction and repulsion, from the general laws of motion.
