Science - Combined - 0653 CIE

Motion

Akopọ

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.

Awọn Afojusun

  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

Ẹ̀kọ́ Ohùn

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Àwòrán ọpọlọ

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Káàdì ìrántí

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Ṣe ìdánrawò káàdì wọ̀nyí nínú áàpù

Akọ̀wé Ẹ̀kọ́

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.

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Gba ohun èlò Green Bridge CBT sórí fóònù tàbí kọ̀mpútà rẹ fún gbogbo ilé ìkàwé IGCSE: ìwé ìdánwò àtijọ́, ìlànà ìdíwọ̀n, àwòrán èrò, káàdì ìkẹ́kọ̀ọ́ àti ẹ̀kọ́ ohùn.

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Ìdánwò Ẹ̀kọ́

Oriire fun ipari ẹkọ lori Motion. Ni bayi ti o ti ṣawari naa awọn imọran bọtini ati awọn imọran, o to akoko lati fi imọ rẹ si idanwo. Ẹka yii nfunni ni ọpọlọpọ awọn adaṣe awọn ibeere ti a ṣe lati fun oye rẹ lokun ati ṣe iranlọwọ fun ọ lati ṣe iwọn oye ohun elo naa.

Iwọ yoo pade adalu awọn iru ibeere, pẹlu awọn ibeere olumulo pupọ, awọn ibeere idahun kukuru, ati awọn ibeere iwe kikọ. Gbogbo ibeere kọọkan ni a ṣe pẹlu iṣaro lati ṣe ayẹwo awọn ẹya oriṣiriṣi ti imọ rẹ ati awọn ogbon ironu pataki.

Lo ise abala yii gege bi anfaani lati mu oye re lori koko-ọrọ naa lagbara ati lati ṣe idanimọ eyikeyi agbegbe ti o le nilo afikun ikẹkọ. Maṣe jẹ ki awọn italaya eyikeyi ti o ba pade da ọ lójú; dipo, wo wọn gẹgẹ bi awọn anfaani fun idagbasoke ati ilọsiwaju.

  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

Ṣiṣẹ́ lórí àwọn ìbéèrè wọ̀nyí nínú ohun èlò náà

Ṣiṣẹ́ lórí àwọn ìbéèrè wọ̀nyí nínú ohun èlò náà

Awọn Iwe Itọsọna Ti a Gba Nimọran

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

Ẹ̀kọ́ síwájú láti àwọn orísun ṣíṣí

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