( ) 2010 10 9 : 2003 3 18
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1 1.1 ( ) Y 1.2 ( ) 20cm 4km/hr 400m/hr 400m/4km 1/10 ( 5 ) 2
1/2.5 (20 ) 1/2.5 (20 ) 400m/hr 1km/hr 1/4 2/3 2/3 4km/hr 20 4km/hr 1-2 350-400m/hr 1/2.5 400m/hr 1km/hr 4km/hr 1/4 5 ( 2000m) ( 3800m) 4.5-5hr 5-5.5hr 2400m 4hr 4.5hr ( ) 1.3 ( ) 50 10 55 + 5 20 10 15 25 + 15 55 + 5 2 3
55 + 5 110 60/55=120 =2 50 + 10 110 60/50=132 =2 12 25 + 10 110 35/25=154 =2 34 25 + 15 110 40/25=176 =2 56 55 + 5 25 + 15 1.5 1.5 10% 1.4 ( ) 0.5m 0.1s 4 [ ] mgh mv 2 /2 m 2gh τ mg m 2gh/τ mg(1+ 2h/g/τ) 4 3 0.2m 3 4 100 3 0 4
50cm 40 2 5
1.5 ( ) ( ) S 1.6 ( ) ( ) 6
1.7 ( ) U U U 7
2 1 2.1 (?)? ( ) ( ) ( 2.1 ) ( 2.2 ) 2.2 (?) 2.3 ( ) 1 :?, Dec. 2005, pp.48-49 8
2.1: : 2.2: : 9
2.3: : ( ) ( 2.3 ) ( 2.4 ) ( 2.5 ) 10
2.4: : 2.5: : 11