1. Nkọwa nke ụdị
Ike bụ ihe na-eme ka ihe ndị a na-ahụ osoosoN'ikwu ya n'ụzọ ọzọ, ike bụ ihe na-agagharị, na-akwụsị ma ọ bụ na-agbanwe ntụziaka mmegharị nke ihe.
Ụdị bụ ọnụọgụ vektọ Ya mere, ike nwere oke na ntụzịaka. Ihe nnọchianya maka ike bụ F (Ike). F bụ ihe nnọchianya izugbe maka ike. E nwere ọtụtụ ụdị ike, ọ bụghịkwa ụdị ike niile nwere ihe nnọchianya F. Nkeji ike mba ụwa bụ kg m/s2 aha ya bụ Newton.
2. Ịghọta ike zuru oke ma ọ bụ ike sitere na ya
Ike zuru oke ma ọ bụ ike sitere na ya bụ mkpokọta ike niile na-arụ ọrụ na ihe. Ike bụ ọnụọgụ vektọ, ya mere a na-agbakọ ike zuru oke site na iji iwu mgbakwunye vektọ.
Ihe atụ nke nsogbu.
1.
Ike niile = 10 Newton, ntụziaka nke ike niile dị n'aka nri.
2.
Ike niile = 8 Newton, ntụziaka nke ike niile dị n'aka nri
3.
Ike niile = 0
4.
Ike niile = 0
5. Ọ bụrụ na oke ihe ndị ahụ bụ otu, mgbe ahụ ihe nwere oke ọsọ kachasị bụ...
Mkparịta ụka
Iwu nke Abụọ nke Newton kwuru na oke ọsọ nke ihe na-enweta bụ nha nha nke ike na nha nha nke ihe ahụ. Ụzọ ọsọ ma ọ bụ ntụziaka nke mmegharị nke ihe bụ nha nha nke ike sitere na ihe ahụ na-arụ ọrụ na ihe ahụ.
Usoro mgbakọ na mwepụ nke iwu nke abụọ nke Newton: a = F / m
Ọsọ ọsọ na-adaba na ike, yabụ ihe nwere ọsọ ọsọ kachasị bụ ihe ike kachasị na-arụ ọrụ na ya.
Ụdị bụ ọnụọgụ vektọ Ya mere, a na-agbanwe mgbakwunye ike dịka iwu si dị maka ịgbakwunye ọnụọgụ vektọ. Ọ bụrụ na ike ndị ahụ dị n'ahịrị kwụ ọtọ, mgbe ahụ a na-agbakwụnye ike ndị dị n'otu ụzọ ahụ ma wepụ ike ndị dị n'akụkụ nke ọzọ.
A –> Ike sitere na ya = 5 + 2 + 3 = Newtons iri (ike gaa n'aka nri)
B –> Ike sitere na ya = 3 + 5 – 2 = 6 Newtons (ike gaa n'aka nri)
C –> Ike sitere na ya = 5 – 12 – 3 = -10 Newton (ntụgharị ike gaa n'aka ekpe)
D –> Ike sitere na ya = 3 – 5 – 12 = -14 Newton (ntụgharị ike gaa n'aka ekpe).
Ihe ịrịba ama dị mma na nke na-adịghị mma na-akọwa naanị ntụziaka nke ike sitere na ya. Ike sitere na ya Ihe nrịbama dị mma pụtara na ntụziaka nke ike sitere na ya dị n'aka nri (ihe ahụ na-aga n'aka nri) ihe nrịbama na-adịghị mma pụtara ntụziaka nke ike sitere na ya dị n'aka ekpe (ihe ahụ na-aga n'aka ekpe).
Azịza ziri ezi bụ D.
6. Ọ bụrụ na ihe ndị a nwere otu oke ibu, kedu foto nwere obere osooso?
Mkparịta ụka
Ibu ihe dị otu ahụ, ya mere, obere osooso na-ejide ihe ahụ nke ike kacha nta na-arụ ọrụ na ya.
A –> Ike sitere na ya = 8 + 15 – 10 = 13 Newtons (ike gaa n'aka nri)
B –> Ike sitere na ya = 10 + 8 – 5 = 13 Newtons (ike gaa n'aka nri)
C –> Ike sitere na ya = 2 + 5 – 3 = Newtons 4 (ike gaa n'aka nri)
D –> Ike sitere na ya = 8 + 4 – 5 = 7 Newtons (ike gaa n'aka nri)
Azịza ziri ezi bụ C.
7. A na-etinye ihe anọ nwere otu oke ike n'otu oge dịka egosiri na eserese na-esonụ. Olee ihe na-enweta obere ọsọ?
Mkparịta ụka
Ibu ihe dị otu ahụ, ya mere, obere osooso na-ejide ihe ahụ nke ike kacha nta na-arụ ọrụ na ya.
A –> Ike sitere na ya = 35 + 30 – 25 = 40 Newtons (ike gaa n'aka nri)
B –> Ike sitere na ya = 15 + 25 – 45 = -5 Newton (ntụgharị ike gaa n'aka ekpe)
C –> Ike sitere na ya = 55 – 30 – 40 = -15 Newton (ntụgharị ike gaa n'aka ekpe)
D –> Ike sitere na ya = 50 + 10 – 40 = 20 Newtons (ike gaa n'aka nri)
Azịza ziri ezi bụ B.
8. Ụzọ na ihe si na ike dị na foto ahụ pụta bụ...
A. 2 N gaa na Tono
B. 2 N gaa Irham
C. 282 N gaa Tono
D. 282 N gaa Irham
Mkparịta ụka
Nnukwu ike sitere na ya :
ΣF = 142 N – 140 N
ΣF = 2 Newton
Nduzi nke ike sitere na ya = ntụziaka nke ike 142 Newton = gaa Tono, n'ihi na 142 Newton karịrị 140 Newton
Azịza ziri ezi bụ A.
9. Lee foto a!
Umar na Amir na-adọkpụ n'akụkụ dị iche iche. Ọ bụrụ na ike Umar bụ 25 N na ike Amir bụ 20 N, mgbe ahụ ihe si na ike abụọ ahụ pụta bụ...
A. 5 Newtons
B. 20 Newton
C. 25 Newton
D. 45 Newton
Mkparịta ụka
Ike sitere na ya = 25 N – 20 N = 5 Newtons
Azịza ziri ezi bụ A.
