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Physics - Kinematics Question with Solution | TestHub

PhysicsKinematics1-DMedium2 minQB

PhysicsMediumsingle choice

In a take-off experiment, the acceleration of an aeroplane rises uniformly from zero to 6 $m / s^{2}$ in 6 s, then stays constant at 6 $m / s^{2}$ for the next 6 s. Starting from rest, the distance covered in 12 s is:

Options:

Answer:

Solution:

For $0$ - $6$ s: $v (6) = \frac{1}{2} \cdot 6 \cdot 6 = 18$ m/s (area), distance = $\frac{6 ^{3}}{6} = 36$ m. For $6$ - $12$ s: $s = 18 (6) + \frac{1}{2} (6) (36) = 216$ m. Total = $252$ m. Option A.

Stream:JEESubject:PhysicsTopic:KinematicsSubtopic:1-D

⏱ 2mℹ️ Source: QB

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