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ID#5804 HSC Physics 1st MCQ (Mymensingh 2025)

v = (6t² + 3t) ms⁻¹ হলে 3s পরে বস্তুর সরণ কত?
ক) 90 m
খ) 67.5 m
গ) 63 m
ঘ) 27 m

ব্যাখ্যা

$s = \int v dt = \int (6t^2 + 3t) dt = 2t^3 + 1.5t^2$
$t=3$ হলে, $s = 2(27) + 1.5(9) = 54 + 13.5 = 67.5 m$।
Resource Details
Exam HSC
Subject Physics 1st paper
Chapter 3
Board Mymensingh
Year 2025

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