Gce Model Questions Vol1 2020 Physics Question 39

Practice objective / multiple choice question 39 from the 2020 Gce Model Questions Vol1 Physics examination.

Gce Model Questions Vol1 2020 Physics Objective / Multiple Choice Medium Difficulty
Question 39 GCE_MODEL_QUESTIONS_VOL1 • 2020 • PHYSICS • objective

A particle moves along a straight line with a time‑dependent acceleration \(a(t) = k t\), where \(k\) is a constant. At \(t = 0\) the particle has a speed of \(2\,\text{m s}^{-1}\) and is at the origin. After \(4\) seconds its speed has doubled. Determine the value of \(k\) and the total distance travelled by the particle in those first four seconds.

Answer Options

A. k = 0.30 s⁻³; distance = 34/3 m (≈11.3 m)
Correct Answer B. k = 0.25 s⁻³; distance = 32/3 m (≈10.7 m)
C. k = 0.20 s⁻³; distance = 28/3 m (≈9.3 m)
D. k = 0.25 s⁻³; distance = 30/3 m (≈10.0 m)
Correct Answer
B
Correct Option:
k = 0.25 s⁻³; distance = 32/3 m (≈10.7 m)

About This Question

This is Gce Model Questions Vol1 2020 Physics Question 39. It is one of the objective questions from the 2020 Gce Model Questions Vol1 Physics examination.

Difficulty level: Medium .

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