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Physics - Kinematics Question with Solution | TestHub

PhysicsKinematics1-DMedium2 minQB

PhysicsMediumsingle choice

The velocity of a particle moving along a straight line decreases linearly with position from 40 m/s at $s = 0$ to a value approaching zero at $s = 80$ m. The time it takes to reach the 80 m position will be:

Options:

Answer:

Solution:

$v = 40 - s /2 = (80 - s) /2$ , so $t = \int_{0}^{80} 2 d s / (80 - s)$ , which diverges logarithmically. Option C.

Stream:JEESubject:PhysicsTopic:KinematicsSubtopic:1-D

⏱ 2mℹ️ Source: QB

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