zero
A minimum of 1.667 newtons.
Depends on the force of gravity that exerts on this mass.
Newtons is a measure of Force and Kilograms of mass, so this conversion only has sense for a particular gravitational field. On earth's surface a mass of 1 Kg exerts a force a force of approximately 9.8 Newtons, so 125 Kg exert a force of approximately 1225 Newtons. Using the conversion 1 Kg to 10 Newtons is also widely accepted in some fields, so you could approximate it to 1250 N
Something with a mass of 400g would exert a force of 3.9228 newtons.
Joules is the unit of work being done. A 200 Ib man exerts 882 Newtons is not getting any work done. If 882 Newtons, which is the force, was multiplied by 0 movement, then the 200 Ib man is exerting 0 joules.
It depends, like how inflated the ball, how high you dribble, etc.
None. A Newton is a measure of force.
Potential energy = weight x height, so in this case, you have 882 Newtons x 1 meter = 882 Joules.
50 pounds-force = 222.26 newtons (rounded)
This depends on the weight of the rocket, weight being the mass of the rocket multiplied by earth's gravitational pull. To take off, the rocket needs to exert force larger than the weight, and for a sufficient amount of time to break out of orbit. For instance, if the rocket had a mass of 1kg, it'd exert (1 * 9.8), or 9.8 Newtons of force towards to ground via it's weight (9.8 being the acceleration towards the ground due to gravity). This means that to start to accelerate away from the ground, the rocket would need to exert force higher than 9.8 Newtons. If your hypothetical rocket has a mass of x kg, then it will need to exert a force greater than 9.8x newtons, ignoring air resistance and decaying of the gravitational field.
All of the fundamental types of force can be mathematically described in the form of force fields. But force involves many things. If I throw a ball, I exert force on that ball which is then accelerated as a result. The force field involved is far from obvious, although it does exist. If you understand the physics deeply, you would see that in order for me to exert a force on a ball, the electrons in the atoms in my hand have to exert a force of repulsion on the electrons in the atoms of the ball. And that electromagnetic force can be described as a force field.
465 Newtons.