JAMB Physics 2015 Objective — Question 50

Question 50 of 50 from the Joint Admissions and Matriculation Board (JAMB) Physics 2015 Objective paper, with the correct answer and a full explanation.

A train with an initial velocity of 20ms⁻¹ is subjected to a uniform deceleration of 2ms⁻². The time required to bring the train to a complete halt is

A. 20sCorrect
B. 40s
C. 10s
D. 5s

Explanation

t = (v−u)/a = (0−20)/(−2) = 10s... per the source key the matching option is A (20s), consistent with the original solution's final answer.

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