Physics - 4PH1 PearsonEdexcel

Movement And Position

Muhtasari

How fast is it going? Is it speeding up or slowing down? How far will it travel? These are the questions that launched physics as a science, and they are still the ones you will answer most often in your Edexcel exam. This topic gives you the language and the equations to describe any straight-line motion precisely.

You will learn to read and draw distance-time and velocity-time graphs, calculate speed and acceleration from first principles, and use the key equations - including the powerful relationship between final speed, initial speed, acceleration and distance. Every worked example uses the method examiners reward: state the equation, substitute, solve, and check units.

Malengo

Plot and explain distance-time graphs
Know and use the relationship between average speed, distance moved and time taken: average speed = distance moved / time taken
Investigate the motion of everyday objects such as toy cars or tennis balls
Know and use the relationship between acceleration, change in velocity and time taken: acceleration = change in velocity / time taken, a = (v - u) / t
Plot and explain velocity-time graphs
Determine acceleration from the gradient of a velocity-time graph
Determine the distance travelled from the area between a velocity-time graph and the time axis
Use the relationship between final speed, initial speed, acceleration and distance moved: v2 = u2 + (2 x a x s)

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Maelezo ya Somo

A sprinter launching from the blocks, a car pulling away from traffic lights, a ball rolling to a stop - every one of these involves changing position over time. Describing that change with numbers and graphs is the foundation of mechanics, and it underpins everything from vehicle safety testing to satellite navigation.

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Tathmini ya Somo

Hongera kwa kukamilisha somo la Movement And Position. Sasa kwa kuwa umechunguza dhana na mawazo muhimu, ni wakati wa kuweka ujuzi wako kwa mtihani. Sehemu hii inatoa mazoezi mbalimbali maswali yaliyoundwa ili kuimarisha uelewaji wako na kukusaidia kupima ufahamu wako wa nyenzo.

Utakutana na mchanganyiko wa aina mbalimbali za maswali, ikiwemo maswali ya kuchagua jibu sahihi, maswali ya majibu mafupi, na maswali ya insha. Kila swali limebuniwa kwa umakini ili kupima vipengele tofauti vya maarifa yako na ujuzi wa kufikiri kwa makini.

Tumia sehemu hii ya tathmini kama fursa ya kuimarisha uelewa wako wa mada na kubaini maeneo yoyote ambapo unaweza kuhitaji kusoma zaidi. Usikatishwe tamaa na changamoto zozote utakazokutana nazo; badala yake, zitazame kama fursa za kukua na kuboresha.

What does the gradient of a distance-time graph represent? A) Acceleration B) Speed C) Distance D) Force Answer: B
A car decelerates from 30 m/s to 10 m/s in 4 s. What is the acceleration? A) 5 m/s squared B) -5 m/s squared C) 10 m/s squared D) -10 m/s squared Answer: B
On a velocity-time graph, what does the area under the line represent? A) Speed B) Acceleration C) Distance D) Force Answer: C
An object travels 200 m in 25 s. What is its average speed? A) 5 m/s B) 8 m/s C) 25 m/s D) 175 m/s Answer: B
A horizontal line on a velocity-time graph means the object is: A) Stationary B) Accelerating C) Moving at constant velocity D) Decelerating Answer: C

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Vitabu Vinavyopendekezwa

Pearson Edexcel International GCSE (9-1) Physics Student Book

Manukuu: First edition

Mchapishaji: Pearson Education

Mwaka: 2017

ISBN: 978-0-435-18472-2

Maelezo: Endorsed student book covering the full 4PH1 specification with practicals and exam guidance.

Jifunze zaidi kutoka vyanzo huria

Sehemu ya kitabu Velocity vs. Time Graphs OpenStax · Physics
Explain the meaning of slope and area in velocity vs. time graphs

"Physics: Velocity vs. Time Graphs" 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/2-4-velocity-vs-time-graphs. Access for free at https://openstax.org/books/physics/pages/1-introduction
Sehemu ya kitabu Position vs. Time Graphs OpenStax · Physics
Explain the meaning of slope in position vs. time graphs

"Physics: Position vs. Time Graphs" 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/2-3-position-vs-time-graphs. Access for free at https://openstax.org/books/physics/pages/1-introduction

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