Gce Model Questions Vol1 2023 Physics Question 21

Practice objective / multiple choice question 21 from the 2023 Gce Model Questions Vol1 Physics examination.

Gce Model Questions Vol1 2023 Physics Objective / Multiple Choice Easy Difficulty
Question 21 GCE_MODEL_QUESTIONS_VOL1 • 2023 • PHYSICS • objective
Gce Model Questions Vol1 2023 Physics Question 21 diagram

A motion diagram shows a particle moving in a straight line. Four equally spaced position markers are recorded at successive equal time intervals of \(2.0\) s. At each marker an arrow indicates the instantaneous speed, with arrow lengths of \(3\) cm, \(5\) cm, \(5\) cm and \(2\) cm respectively. Each centimetre of arrow length corresponds to \(1.0\) m s\(^{-1}\). Using the diagram, determine (a) the average speed of the particle over the whole \(8.0\) s, and (b) whether the particle is accelerating, decelerating or moving at constant speed during each interval.

Answer Options

Correct Answer A. Average speed = 3.75 m s⁻¹. The particle accelerates in the first interval, moves at constant speed in the second, and decelerates in the third.
B. Average speed = 4.25 m s⁻¹. The particle accelerates in the first interval, moves at constant speed in the second, and decelerates in the third.
C. Average speed = 3.75 m s⁻¹. The particle accelerates in the first interval, decelerates in the second, and moves at constant speed in the third.
D. Average speed = 3.75 m s⁻¹. The particle moves at constant speed in the first interval, accelerates in the second, and decelerates in the third.
Correct Answer
A
Correct Option:
Average speed = 3.75 m s⁻¹. The particle accelerates in the first interval, moves at constant speed in the second, and decelerates in the third.

About This Question

This is Gce Model Questions Vol1 2023 Physics Question 21. It is one of the objective questions from the 2023 Gce Model Questions Vol1 Physics examination.

Difficulty level: Easy .

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