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Physics - Kinematics Question with Solution | TestHub

PhysicsKinematics1-DHard2 minQB

PhysicsHardsingle choice

A body moves in a straight line with acceleration $a = 24 - 6 v$ (SI units), starting from rest at $t = 0$ . Its velocity at $t = \frac{ln 2}{6}$ s, in m/s, is:

Options:

Answer:

Solution:

$\int_{0}^{v} \frac{d v}{24 - 6 v} = \int_{0}^{t} d t$ gives $ln \frac{24}{24 - 6 v} = 6 t = ln 2$ , so $24 - 6 v = 12$ and $v = 2$ m/s. Option B.

Stream:JEESubject:PhysicsTopic:KinematicsSubtopic:1-D

⏱ 2mℹ️ Source: QB

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