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
Akọmọ Ojú-ẹkọ
Ọ dị na ngwa Green Bridge
Budata ngwa Green Bridge CBT na ekwentị maọbụ kọmputa gị iji nweta akwụkwọ ndụmọdụ zuru oke, ajụjụ mmụta, na ndị ọzọ.
Ayẹwo Ẹkọ
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
Ọ dị na ngwa Green Bridge
Budata ngwa Green Bridge CBT na ekwentị maọbụ kọmputa gị iji nweta akwụkwọ ndụmọdụ zuru oke, ajụjụ mmụta, na ndị ọzọ.
Ọ dị na ngwa Green Bridge
Budata ngwa Green Bridge CBT na ekwentị maọbụ kọmputa gị iji nweta akwụkwọ ndụmọdụ zuru oke, ajụjụ mmụta, na ndị ọzọ.
Àwọn Ìwé Tó Dáa Láti Kà
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.
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