JAMB Physics 2012 Objective — Question 6
Question 6 of 50 from the Joint Admissions and Matriculation Board (JAMB) Physics 2012 Objective paper, with the correct answer and a full explanation.
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Calculate the total distance covered by a train before coming to rest if its initial speed is 30ms⁻¹ with a constant retardation of 0.1ms⁻².
- A. 550Cm
- B. 4500mCorrect
- C. 420Cm
- D. 300Cm
Explanation
Using v²=u²−2as with v=0: s = u²/(2a) = 30²/(2×0.1) = 900/0.2 = 4500m.
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