TRACT 37.

OF GUNNERY.

281

V15 : VI 5 -

Veloc. lost.

Time in the

V 1 W 1

yi5

yis

yiS-yiS

V 15

V 12 -v/il

----- X)

-v/15

yi5

y io-v 9

yl5

ygrVip

^15

V 3 -a / 7

-X-IX-y|

a/15

V7~V 6

—-—- 1 ;

v "5

_ywi w

v/15

v/15

y-y P

VI 5V 1 *

V 2 ~a /1

: t :: t :: t:

yi 5

yi—yo

V 15

= 40-7= 42-2= 43-8= 45-1= 47-8 &c.= 50-3= 53-2= 56-6= GO-8= C6-1= 73-2= 83-0= 98-5128-3309-8

v —

■V =

Sum 1200-0

^ -—t — -00007 1st inchyi5

y 4 J —t = -00007 2nd

/‘ 5 o

y |J -~ = -00008 3rd

yi5

y i2 ~yL'if = -00008 4thyi5

yn-y io^ _ . 00008 5t ],

yi5

— -00009 6th

yi5

= -00009 7th

V‘5

^Zj£Lt = -00010 8thyi5

. yWl ; = -00011 9thv/15

y r 'Z . V 5 .t = -00012 10th

yi5

-VW 4 ; = -00013 llthyi5

y*-y g r — -00014 12 th

yi5

ys-yg^ _ -ooon 13thyi5

— -00022 14th

yi5

y - / 0 - / 1 — -00054 15thyi5_

Sum ^ or - 00208 sec.

Hence, as the motion lost at the beginning is very small;and consequently the motion communicated to any body, asan inch plank, in passing through it, is very small also; wecan conceive how such a plank may be shot through, whenstanding upright, without oversetting it.