Physics - Kinematics Question with Solution | TestHub

PhysicsKinematics1-DEasy2 minPYQ_2023

PhysicsEasysingle choice

The distance travelled by an object in time $t$ is given by $s = (2.5) t^{2}$ . The instantaneous speed of the object at $t = 5 s$ will be :

Answer:

Solution:

It is given that
$s = 2.5 t^{2}$
Differentiating,
$v = \frac{d s}{d t} = \frac{d (2.5 t^{2})}{d t} = 5 t$
$At t = 5 s, v = 25 m s^{- 1}$

Stream:JEESubject:PhysicsTopic:KinematicsSubtopic:1-D

⏱ 2mℹ️ Source: PYQ_2023

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