speed weight

[frii143]

what I want to know would free fall weight acted like a combustion if dropped from more than a 130 feet. like 12 gallons of water about 100 pounds. I think free fall a human reaches about a 120 mph dropping a 120 feet. I think it would need a flywheel to capture the impacted.

[kolbacict]

Interesting paradox.
In practice, try to move 200 kg. barrel on a flat, smooth, hard surface, for example, 10 meters.
How much energy do you spend on this. And now tilt the barrel on the edge of its bottom.
And roll the barrel on the edge of the bottom to a new place.This is much more easily.

[Willy]

Interesting paradox.
In practice, try to move 200 kg. barrel on a flat, smooth, hard surface, for example, 10 meters.
How much energy do you spend on this. And now tilt the barrel on the edge of its bottom.
And roll the barrel on the edge of the bottom to a new place.This is much more easily.

Its not a paradox.

In practice...

The same amount of energy is used  TO MOVE A BARREL on wheels
as is used to slide the barrel. 

In the case of sliding the barrel, a greater amount of additional energy is used
TO OVERCOME FRICTION
    than
the is amount of additional energy used to overcome friction when instead, a
barrel is rolled.

The PORTION of the energy that goes into MOVING THE BARREL is the same, in
both cases.

[Willy]

what I want to know would free fall weight acted like a combustion if dropped from more than a 130 feet. like 12 gallons of water about 100 pounds. I think free fall a human reaches about a 120 mph dropping a 120 feet. I think it would need a flywheel to capture the impacted.

You know the answer.

[Cloxxki]

Interesting paradox.
In practice, try to move 200 kg. barrel on a flat, smooth, hard surface, for example, 10 meters.
How much energy do you spend on this. And now tilt the barrel on the edge of its bottom.
And roll the barrel on the edge of the bottom to a new place.This is much more easily.

After the rolling, you still need to raise it back up.
If the barrel is on perfectly slippery ice, rolling doesn't help anymore any, because you are first lifting the barrel to its tipping point to tilt and then losing a lot of nergy in the fall that needs to all be returned by you to put it back up straight.