Ojiji nke nchekwa ike igwe maka mmegharị n'elu elu gbagọrọ agbagọ - nsogbu na ngwọta

1. Blọk na-ada n'elu mbara igwe dị larịị nke na-enweghị esemokwu . Gịnị bụ ọsọ blọk mgbe ọ dara n'ala. Ọsọ ọsọ nke ike ndọda bụ 10 m/s ²

A maara:

Ogologo (h) = 8 m

Ọsọ ọsọ nke ike ndọda (g) = 10 m/s ²

Achọtara : ọsọ (v)

Ngwọta :

Ike mekanikal mbụ (ME _o ) = ike ike ndọda (PE)

ME _o = PE = mgh = m (10)(8) = 80 m

Ike mekanikal ikpeazụ (ME _t ) = ike kinetic (KE)

ME _t = KE = ½ mv ²

Ụkpụrụ nchekwa ike igwe na-ekwu na ike igwe mbụ = ike igwe ikpeazụ:

M _o = M _t

80 m = ½ mv ²

80 = ½ v ²

160 = v ²

v = √160 = √(16)(10) = 4√10 m/s

[irp]

2. Ihe dị kilogram 1 na-amịda ala n'akụkụ mita 8. Chọpụta ike kinetic mgbe ihe ahụ gafere mita 5… Ọsọ ọsọ n'ihi ike ndọda g = 10 m/s ²

A maara:

Ibu (m) = 0.2 kg

d = mita 5

Ọsọ ọsọ nke ike ndọda (g) = 10 m/s ²

Achọrọ : ike kinetic (KE)

Ngwọta:

mmehie 30 ^o = h / d

0.5 = awa / 5

h = (0.5)(5) = mita 2.5

Mgbanwe dị n'ịdị elu nke ihe ahụ bụ mita 2.5.

Ike mekanikal mbụ (ME _o ) = ike ike ndọda (PE)

ME _o = PE = mgh = (1)(10)(2.5) = 25 Joules

Ike mekanikal ikpeazụ (ME _t ) = ike kinetic (KE)

M _t = KE

Ụkpụrụ nke nchekwa ike igwe na-ekwu na ike igwe mbụ = ike igwe ikpeazụ:

M _o = M _t

25 = KE

Ike Kinetic = 25 Joules.

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1. Ọrụ nke ike na-arụ site na nsogbu na ngwọta
2. Nsogbu na ngwọta ike ọrụ-kinetic
3. Nsogbu na ngwọta nke ụkpụrụ ike ọrụ-mekaniki
4. Nsogbu na ngwọta ike nwere ike ike ndọda
5. Ike nwere ike nke nsogbu na ngwọta nke mmiri na-agbanwe agbanwe
6. Nsogbu na ngwọta ike
7. Ojiji nke nchekwa ike igwe maka mmegharị ọdịda n'efu
8. Ojiji nke nchekwa ike igwe maka mmegharị elu na ala na mmegharị ọdịda efu
9. Ojiji nke nchekwa ike igwe maka mmegharị n'elu gbagọrọ agbagọ
10. Ojiji nke nchekwa ike igwe maka mmegharị n'elu elu gbagọrọ agbagọ
11. Ojiji nke nchekwa ike igwe maka mmegharị ihe atụ