Quote:
4000Ns, not 4000N. This is the impulse applied to the pipe, not the force. It's also the momentum added to it. The force is 80N because you defined the force to be 80N.


q: what is the amount of force that you would need to apply to a 100kg mass in order to accelerate it at a acceleration rate of .8 m/s/s for a distance of 1000 meters over a time period of 50 seconds.

answer: 4000N

80N x 50 seconds = 4000N

1 newton = the force required to accelerate a 1 kg mass at a
acceleration of 1 m/s/s.

or you can say

1 newton = the force required to accelerate a 1 kg mass at a
acceleration rate of 1 m/s each second.

ie ... in 1 second the 1kg mass will accelerate to 1 m/s/s if you apply a force of 1N to it for a time of 1 second


so 50 seconds x 80N = 4000N

http://en.wikipedia.org/wiki/Newton_(unit)

Quote:
it is equal to the amount of net force required to accelerate a mass of one kilogram at a rate of one meter per second squared



3/4 inch of dust build up on the moon in 4.527 billion years,LOL and QM is fantasy science.