Ihe atụ nke ajụjụ ike kinetic

Ihe atụ atọ nke ajụjụ ike kinetic

1. Ihe A na B nwere otu oke ibu, nke ọ bụla na-agagharị n'ọsọ dịka egosiri na foto dị n'okpuru:
Oke ike kinetic dị n'etiti ihe A na ihe B bụ...

A. 1: 2
B. 1: 4
C. 2: 1
D. 4:1

Mkparịta ụka

Ihe A na B nwere otu oke ibu. A na-eji m egosi oke ibu nke ihe A na B.
Usoro ike kinetic:
EK = ½ mv²
Nkọwa: EK = ike kinetic, m = oke, v = ọsọ
Ike Kinetic nke ihe A :
EK_A = ½ mv² = ½ m 2² = ½ m (4) = 2 m
Ike Kinetic nke ihe B :
EK_B = ½ mv² = ½ m 4² = ½ m (16) = 8 m
Ntụnyere ike kinetic nke ihe A na ihe B:
EK_A : EK_B
2 mita: 8 mita
2: 8
1: 4
Azịza ziri ezi bụ B.

2. Lee foto nke bọs na ụgbọala na-agagharị n'okpuru!
Ibu bọs ahụ dị kilogram 10.000, ibu nke ụgbọ ala ahụ dịkwa kilogram 500, yabụ oke ike kinetic nke bọs ahụ na ike kinetic nke ụgbọ ala ahụ bụ…

A. 2: 1
B. 4: 1
C. 5: 1
D. 20:1

Mkparịta ụka
Ike kinetic nke bọs:
EK = ½ mv² = ½ (10.000)(10)² = (5000)(100) = 500.000
Ike kinetic nke ụgbọ ala:
EK = ½ mv² = ½ (500)(20)² = (250)(400) = 100.000
Ntụnyere ike kinetic nke bọs na ike kinetic nke ụgbọ ala bụ:
500.000: 100.000
5: 1
Azịza ziri ezi bụ C.

3. Lee foto ahụ!
Ụgbọala na-agagharị n'ọsọ dị iche iche site na A ruo B. Oke ike kinetic nke ụgbọala ahụ nwere na isi A na isi B bụ…
A. 1: 2
B. 1: 4
C. 2: 1
D. 4:1
Mkparịta ụka
Ike kinetic nke ụgbọ ala na isi A:
EK = ½ mv² = ½ m (10)² = ½ m (100) = 50 m
Ike kinetic nke ụgbọ ala na isi B:
EK = ½ mv² = ½ m (20)² = ½ m (400) = 200 m
Ntụnyere ike kinetic nke ụgbọ ala ahụ na isi A na isi B bụ:
50 mita: 200 mita
50: 200
1: 4
Azịza ziri ezi bụ B.

Isi mmalite ajụjụ:

Ajụjụ Ule Sayensị Mba nke Ụlọ Akwụkwọ Sekọndrị/Islamic Junior High School Sayensị