Physics - Kinematics Question with Solution | TestHub

PhysicsKinematicsRelativeEasy2 minPYQ_2020

PhysicsEasysingle choice

Two cars $A$ and $B$ are moving with a speed of $15$ $m s^{- 1}$ and $5$ $m s^{- 1}$ and acceleration of the cars are $1$ $m s^{- 2}$ and $6 m s^{- 2}$ respectively. Then the minimum separation between them is

Options:

Answer:

Solution:

$v_{A B} = 10 m s^{- 1}, a_{A B} = - 5 m s^{- 2}$
$s_{A B} = 10 t - \frac{5}{2} t^{2}$

Minimum displacement of A w.r.t. B
$s_{A B_{\min}}$ is at $t = \frac{10}{5} = 2$
Minimum separation $= 20 - 10 = 10 m$

Stream:NTA_ABHYASSubject:PhysicsTopic:KinematicsSubtopic:Relative

⏱ 2mℹ️ Source: PYQ_2020

Doubts & Discussion

Loading discussions...