Post on 18-Jun-2020
200Γ1000(m)
134Γ60( ) 24.9 m/s
1 km/h 1000(m)
60Γ60( )
1000
3600 m/s
200Γ1000(m)
134Γ60( )
200Γ1000
134Γ60
3600
1000 km/h 89.6 km/h
552.6(km)
156( )
447.4(km)
70( )
447.4
70
552.6
156 1.8
(1) 10(m)
3.0( ) 3.3 m/s
(2) 30(m)
2.0( ) 15 m/s
(3) 20(m)
3.0( ) 6.7 m/s
(1) + =
(2) + =
(3) + =
(4) 20 m
4 m/s 5 s
(5) 2 m/s 5 s 10 m
(6)
(6) 20 m
2β3 m/s
10β3
3 s
4 m/s 2 m/s 6 m/s
4 m/s 2 m/s 2 m/s
4 m/s 2 m/s
2βπ m/s
4 m/s
2 m/s
30
4 m/s
2 m/s
2βπ m/s
(1)
20 m/s
(2)
0 m/s
(3)
10 m/s
10 m/s
10 m/s
10 m/s 10 m/s
10 m/s 10 m/s
(4)
(5)
10 m/s 10 m/s
10β2 m/s
10 m/s 20 m/s
( ) 10β5 m/s
10β3 m/s
10 m/s
30
30
60
2
1
βπ
π₯ π‘ π£
10
10 10 5 10 150 m
10 10 m 5 10 m 50 m
50 m
20 s 2.5 m/s
π₯ π‘ π£
π
π
0 1 2 3 π‘ (s)
π£ (m/s)
10
0 π‘
π£
π£ π‘ π
0 π‘
π
(1)
20 m/s 10 m/s
10 s 1.0 m/s2
(2) 0 m/s 10 m/s
10 s 1.0 m/s2
1.0 m/s2
(3)
10 β2 m/s2
π£ π‘ 10 m/s2
π£ π‘ 80 m
10 m/s 10 m/s
10β2 m/s
3.0 15 m
π£ π‘
6.0 1
2 2 4
1
2 4 8 20 m
6.0 1
2 2 4
1
2 4 8 12 m
2.0
0
π‘ (s)
π£ (m/s)
1.0 2.0 3.0
8.0
8.0
0
π‘ (s)
π£ (m/s)
1.0 2.0 3.0 4.0 5.0 6.0
4.0
8.0
0
π‘ (s)
π£ (m/s)
1.0 2.0 3.0 4.0 5.0 6.0
4.0
(1) π£ π£0 ππ‘ 8.0 2.0 π 2.0
π 3.0 m/s2
π₯ π£0π‘ 1
2 ππ‘2 π₯ 2.0 2.0 +
1
2 3.0 2.02
2.0 π₯ 10 m
(2) π£ π£0 ππ‘ 10 4.0 2.0 π‘
π‘ 3.0 s
π₯ π£0π‘ 1
2 ππ‘2 π₯ 4.0 3.0 +
1
2 2.0 3.02
π₯ 21 m
(3) π£ π£0 ππ‘ π£ 2.0 3.0 4.0
4.0 π£ 14 m/s
π₯ π£0π‘ 1
2 ππ‘2 π₯ 2.0 4.0 +
1
2 3.0 4.02
π₯ 32 m
(4) π£ π£0 ππ‘ 8.0 π£0 2.0 3.0
π£0 2.0 m/s
π₯ π£0π‘ 1
2 ππ‘2 π₯ 2.0 3.0 +
1
2 2.0 3.02
3.0 π₯ 15 m
(5) π£2 π£02 2ππ₯ 102 202 2π 75
π 2.0 m/s2 2.0 m/s2
(6) π₯ π£0π‘ 1
2 ππ‘2 105 20 3.0 +
1
2 π 3.02
π 10 m/s2
(7) π£2 π£02 2ππ₯ π£2 5.02 2 2.0 24
π£ 11 m/s
(8) π£ π£0 ππ‘ 0 π£0 π 4.0
π₯ π£0π‘ 1
2 ππ‘2 60 π£0 4.0 +
1
2 π 4.02
π£0 30 m/s π 7.5 m/s2
7.5 m/s2
π£ π‘ π
πβπ0
π
π π‘
π0 π πβπ0
π 0
π₯ π0π‘ 1
2
πβπ0
π π‘2
πβπ0
2π (π‘
ππ0
πβπ0 )
2
ππ0
2
2(πβπ0)
0 π‘
π₯
0 π‘
π
2ππ0
π0βπ
ππ0
2
2(πβπ0)
ππ0
π0βπ
π β π0
π
π£ π‘ π£
π»
1
2 ππ2 π»
π β 2π»
π ππ β2ππ»
π£ π‘ π£
π»
π (π ππ)
2 π π»
0 π‘
π£
π
ππ
0 π‘
π£
T
V gT
V
π βπ βπ2 2ππ»
π π 0
βπββπ2 2ππ»
π
π ππ βπ2 2ππ»
π£ π‘ π£
(1) π£ 0 π
π π
π
π
(2) π» + π» + 1
2 ππ π» +
π2
2π
(3)
2π 2π
π
0 π‘
π£
π
π
π
2π
(4) π»
π» ππ 1
2 ππ2
π π βπ2 2ππ»
π π 0
πββπ2 2ππ»
π
(5) π ππ βπ2 2ππ»
βπ2 2ππ»
(1) π£ π£0 ππ‘ π£ 0 9.8 2.0
2.0 π£ 19.6 m/s
π¦ π£0π‘ 1
2 ππ‘2
π¦ 0 2.0 + 1
2 9.8 2.02
2.0 π¦ 19.6 m
(2) π¦ π£0π‘ 1
2 ππ‘2
44.1 0 π‘ + 1
2 9.8 π‘2
π‘ 3.0 s
(3) π£ π£0 ππ‘ π£ 9.8 9.8 2.0
2.0 π£ 29.4 m/s
π¦ π£0π‘ 1
2 ππ‘2
π¦ 9.8 2.0 + 1
2 9.8 2.02
2.0 π¦ 39.2 m
(4) 0
π£ π£0 ππ‘ 0 19.6 9.8 π‘
π‘ 2.0 s
π¦ π£0π‘ 1
2 ππ‘2
π¦ 19.6 2.0 1
2 9.8 2.02
π¦ 19.6 m
0 19.6 π‘ 1
2 9.8 π‘2
π‘ 4.0 s
A π¦π΄ 0 π‘ 1
2 π π‘2
B π¦π΅ π0 ( π‘ 2) 1
2 π(π‘ β 2)2
B A B A
0 π‘ 1
2 π π‘2 π0 ( π‘ 2)
1
2 π(π‘ β 2)2
π‘ 2(π0βπ)
π0β2π (s)
π‘
(1) 2.0 m/s 2.0 s 4.0 m
1
2 9.8 2.02 19.6 m
(2)
(3)
π¦ π£0π‘ 1
2 ππ‘2
78.4 0 π‘ + 1
2 9.8 π‘2 π£0 0 m/s
π‘ 4.0 s
3.0 m/s 4.0 s 12 m
(4)
1.0
9.8 m/s
19.6 m/s
0 + 9.8 2
19.6 m/s 19.6βπ m/s
4.9 m/s
4.9β3 m/s 4.9 m/s
π£0 ππ‘ 4.9 9.8 1.0
4.9β3 m/s
9.8 m/s
(1)
1
2 ππ2 π» π β
2π»
π
(2) ππ β2ππ»
(3) ππ πβ 2π» π
π£ π‘ π£
π
β2ππ»
0 π‘
π£
π
π sin π
π sin π
2π
βπ2 2ππ»
(1) π£ 0 π
π π
πsinπ
π
(2) 1
2 π sin π π
π2sin2π
2π
(3)
2π 2πsinπ
π
(4)
π
(5) π cos π 2π 2π2sinπcosπ
π
2π2sinπcosπ
π
π2sin2π
π
π 45
π
π
π sin π
π sin π π cos π
π cos π