6. What proportion do the momenta bear to each other when neither the masses nor velocities are equal?
They are to each other as the products of their masses into their velocities respectively.
7. What is the average weight of a horse?
About 1000 pounds.
152]
8. What space does a horse occupy in the ranks; in a stall; and at a picket?
In the ranks a front of 40 in., a depth of 10 feet; in a stall; from 3½ to 4½ feet front; at picket 3 feet by 9.
9. What are the comparative effects of the labor of a man, and that of a horse or mule?
Taking the useful effect of a man’s daily labor as unity, a horse can carry a load on a horizontal plane, 4.8 to 6.1 times; and a mule, 7.6 times greater than a man. Taking a man with a wheel-barrow as unity, a horse in a four-wheel wagon can draw 17.5, and in a cart 24.3; and a mule in a cart, 23.3 times greater burden.
10. What weight is an artillery horse required to draw?