Physics - Kinematics Question with Solution | TestHub

PhysicsKinematicsRelativeMedium2 minPYQ_2024

PhysicsMediumsingle choice

Train A is moving along two parallel rail tracks towards north with $72 km h^{- 1}$ and train $B$ is moving towards south with speed $108 km h^{- 1}$ . Velocity of train $B$ with respect to $A$ and velocity of ground with respect to $B$ are (in $m s^{- 1}$ ):

Options:

Answer:

Solution:

$V_{A} = 72 km h^{- 1} = 72 \times \frac{1000}{3600} = 20 m s^{- 1}$ and

$V_{B} = - 108 km h^{- 1} = - 108 \times \frac{1000}{3600} = - 30 m s^{- 1}$

Velocity of $B$ w.r.t. $A$ :

$V_{B / A} = - 30 - 20 = - 50 m s^{- 1}$

Velocity of ground w.r.t. $B$ :

$V_{G / B} = 0 - (- 30) = 30 m s^{- 1}$

Stream:JEESubject:PhysicsTopic:KinematicsSubtopic:Relative

⏱ 2mℹ️ Source: PYQ_2024

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