Science - Combined - 0653 CIE

Motion

Gbogbo ọrọ náà

Everything around you is either moving or could be set moving, and physics begins by describing that motion precisely. How fast is a sprinter going? Is a car speeding up or slowing down? How far does a dropped stone fall in two seconds? Every one of these questions is answered with a handful of equations and two simple graphs.

In this lesson you will define speed, velocity and acceleration, then read and draw distance-time and speed-time graphs with confidence. You will calculate speed from a gradient, distance from an area, and handle free fall and terminal velocity. By the end you should be able to look at a graph and tell its whole story.

Ebumnobi

  1. [Core] Define speed as distance travelled per unit time; recall and use the equation v = s / t
  2. [Core] Recall and use the equation total distance travelled average speed = total time taken
  3. [Core] Sketch, plot and interpret distance-time and speed-time graphs
  4. [Core] Know that an object moving with increasing speed is accelerating, and that an object moving with decreasing speed is decelerating
  5. [Core] Determine, qualitatively, from the shape of a distance-time graph when an object is: (a) at rest (b) moving with constant speed
  6. [Core] Determine, qualitatively, from the shape of a speed-time graph when an object is: (a) at rest (b) moving with constant speed (c) accelerating (d) decelerating
  7. [Core] Calculate speed from the gradient of a straight-line section of a distance-time graph
  8. [Supplement] Define acceleration for an object moving in a straight line as change in speed per unit time; recall and use the equation Δv a = Δt
  9. [Supplement] Determine from given data or the shape of a speed-time graph when an object is moving with constant acceleration
  10. [Supplement] Calculate acceleration from the gradient of a straight-line section of a speed-time graph

Nkuzi Olu

Gee ntị na nkuzi a na ngwa

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

Motion is the foundation of mechanics: forces, momentum and energy all build on it. Examiners love motion because it links words, equations and graphs at once. Read a speed-time graph correctly and you can pull out speed, acceleration and distance from a single picture, which is why this topic appears in almost every paper.

Ndetu Nkuzi Zuru Ezu di na Ngwa Green Bridge

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Nnyocha Ọmụmụ

Ekele diri gi maka imecha ihe karịrị na Motion. 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.

  1. A car travels 150 m in 10 s. Its average speed is: A. 1.5 m/s B. 15 m/s C. 150 m/s D. 1500 m/s Answer: B
  2. On a distance-time graph, a horizontal line means the object is: A. accelerating B. moving at constant speed C. at rest D. decelerating Answer: C
  3. On a speed-time graph, the distance travelled is given by: A. the gradient of the line B. the area under the line C. the highest point D. the time axis intercept Answer: B
  4. A car speeds up from 10 m/s to 30 m/s in 5 s. Its acceleration is: A. 2 m/s2 B. 4 m/s2 C. 6 m/s2 D. 100 m/s2 Answer: B
  5. A skydiver reaches terminal velocity when: A. weight is zero B. drag is zero C. drag equals weight D. the parachute opens Answer: C

Rue ajuju ndi a n'ime ngwa ahu

Rue ajuju ndi a n'ime ngwa ahu

Akwụkwọ A Na-atụ Aro

Cambridge IGCSE Physics Coursebook
Cambridge IGCSE Physics Coursebook
Ìkọ̀wé-àbáojú: Third edition
Onye Mbipụta: Cambridge University Press
Afọ: 2021
ISBN: 978-1-108-88807-3
Akọkọ ọrọ.: Endorsed coursebook with full coverage of the 0625/0972 syllabus, worked examples and practical skills.
Cambridge IGCSE Physics
Cambridge IGCSE Physics
Ìkọ̀wé-àbáojú: Third edition
Onye Mbipụta: Hodder Education
Afọ: 2014
ISBN: 978-1-4441-7642-1
Akọkọ ọrọ.: Endorsed textbook covering the Core and Supplement content with worked examples and questions.

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Ị chọrọ ime ajụjụ ule ọmarịcha gbasara Motion? Budata ngwa Green Bridge CBT iji nweta ajụjụ ule ọmarịcha na nyocha zuru ezu gbasara isiokwu a.

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