Physics - Kinematics Question with Solution | TestHub

PhysicsKinematics1-DEasy2 minQB

PhysicsEasysingle choice

The velocity of a car on a straight road is $v = 10 + 6 t - t^{2}$ (SI units). Its instantaneous acceleration at $t = 5$ s is:

Answer:

Solution:

$a = \frac{d v}{d t} = 6 - 2 t$ , so at $t = 5$ s, $a = 6 - 10 = - 4 m / s^{2}$ . Option B.

Stream:JEESubject:PhysicsTopic:KinematicsSubtopic:1-D

⏱ 2mℹ️ Source: QB

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