Forces And Movement
Gbogbo ọrọ náà
Every time you push a door, kick a ball or brake a bicycle, forces are at work changing the way things move. Understanding how forces combine, how they link to acceleration, and why heavy lorries need longer to stop gives you the tools to explain motion in everyday life and in the exam.
In this lesson you will learn how to identify and combine forces, apply Newton's laws including \(F = ma\), distinguish weight from mass, explain terminal velocity, and analyse the factors that affect vehicle stopping distances - all key topics for Paper 3 (Physics).
Ebumnobi
- Describe the effects of forces between bodies such as changes in speed, shape or direction
- Identify different types of force such as gravitational or electrostatic
- Know that friction is a force that opposes motion
- Know and use the relationship between unbalanced force, mass and acceleration: F = m x a
- Know and use the relationship between weight, mass and gravitational field strength: W = m x g
- Know that the stopping distance of a vehicle is made up of the sum of the thinking distance and the braking distance
- Describe the factors affecting vehicle stopping distance, including speed, mass, road condition and reaction time
Maapụ uche
E seela isiokwu a ka ị hụ otu echiche si ejikọta.
Mepee maapụ uche na ngwa
Kaadị ncheta
Omume ncheta ngwa ngwa n'ihe a na-anwale n'isiokwu a.
Mee omume kaadị ndị a na ngwa
Akwụkwọ Ọmụmụ
Ndetu Nkuzi Zuru Ezu di na Ngwa Green Bridge
Nweta ngwa Green Bridge CBT na ekwenti gi ma o bu kompiuta maka ulo akwukwo IGCSE zuru oke: akwukwo ule ndi gara aga, usoro nyocha, eserese uche, kaadi omumu na nkuzi olu.
Nnyocha Ọmụmụ
Ekele diri gi maka imecha ihe karịrị na Forces And Movement. Ugbu a na ị na-enyochakwa isi echiche na echiche ndị dị mkpa, ọ bụ oge iji nwalee ihe ị ma. Ngwa a na-enye ụdị ajụjụ ọmụmụ dị iche iche emebere iji kwado nghọta gị wee nyere gị aka ịmata otú ị ghọtara ihe ndị a kụziri.
Ị ga-ahụ ngwakọta nke ụdị ajụjụ dị iche iche, gụnyere ajụjụ chọrọ ịhọrọ otu n’ime ọtụtụ azịza, ajụjụ chọrọ mkpirisi azịza, na ajụjụ ede ede. A na-arụpụta ajụjụ ọ bụla nke ọma iji nwalee akụkụ dị iche iche nke ihe ọmụma gị na nkà nke ịtụgharị uche.
Jiri akụkụ a nke nyocha ka ohere iji kụziere ihe ị matara banyere isiokwu ahụ ma chọpụta ebe ọ bụla ị nwere ike ịchọ ọmụmụ ihe ọzọ. Ekwela ka nsogbu ọ bụla ị na-eche ihu mee ka ị daa mba; kama, lee ha anya dị ka ohere maka ịzụlite onwe gị na imeziwanye.
- Which of the following is a non-contact force? A) Friction B) Air resistance C) Tension D) Gravitational Answer: D
- A resultant force of 600 N acts on a 200 kg object. What is the acceleration? A) 120 000 m/s^2 B) 3 m/s^2 C) 0.33 m/s^2 D) 800 m/s^2 Answer: B
- What happens to an object when the resultant force on it is zero? A) It stops immediately B) It accelerates C) It moves at constant velocity or stays still D) It changes direction Answer: C
- An astronaut has a mass of 70 kg. What is their weight on Earth (g = 10 N/kg)? A) 7 N B) 70 N C) 700 N D) 7000 N Answer: C
- Which factor does NOT affect braking distance? A) Speed of the vehicle B) Mass of the vehicle C) Driver's reaction time D) Road surface conditions Answer: C
Rue ajuju ndi a n'ime ngwa ahu
Rue ajuju ndi a n'ime ngwa ahu
Akwụkwọ A Na-atụ Aro
Mụtakwuo ihe site na isi mmalite mepere emepe
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Akụkụ akwụkwọ
Newton's Second Law of Motion
Describe Newton’s second law, both verbally and mathematically
"Physics: Newton's Second Law of Motion" by OpenStax, OpenStax, Rice University, licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Source: https://openstax.org/books/physics/pages/4-3-newtons-second-law-of-motion. Access for free at https://openstax.org/books/physics/pages/1-introduction
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Akụkụ akwụkwọ
Newton's First Law of Motion: Inertia
Describe Newton’s first law and friction, and
"Physics: Newton's First Law of Motion: Inertia" by OpenStax, OpenStax, Rice University, licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Source: https://openstax.org/books/physics/pages/4-2-newtons-first-law-of-motion-inertia. Access for free at https://openstax.org/books/physics/pages/1-introduction
Ndị otu ndị ọzọ bipụtara ha n'okpuru ikike mepere emepe, anyị na-ekele ha dị ka ha si chọọ. Njikọ na-emepe saịtị ha.
Meecha Ajụjụ Ule Ọmarịcha
Ị chọrọ ime ajụjụ ule ọmarịcha gbasara Forces And Movement? Budata ngwa Green Bridge CBT iji nweta ajụjụ ule ọmarịcha na nyocha zuru ezu gbasara isiokwu a.
Budata Ngwa Ahụ Na Google Playstore
Ihe nile ichoro iji nwee ihe ịga nke ọma na JAMB, WAEC & NECO.
