Physics - Kinematics Question with Solution | TestHub

PhysicsKinematicsRelativeEasy2 minPYQ_2020

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A car A is moving with speed $40 km h^{- 1}$ along a straight line $30 °$ north of east and another car B is moving with same speed along a straight line $30 °$ south of east. The relative velocity of car A as observed from the car B is

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Answer:

Solution:

${\vec{V}}_{A} = 40 \cos 30^{o} \hat{i} + 20 \hat{j}$

${\vec{V}}_{B} = 40 \cos 30^{o} \hat{i} - 20 \hat{j}$

$∴ {\vec{V}}_{A B} = {\vec{V}}_{A} - {\vec{V}}_{B} = 40 \hat{j}$

The relative velocity of car A as observed from car B is $40 km h^{- 1}$ north

Subject:PhysicsTopic:KinematicsSubtopic:Relative

⏱ 2mℹ️ Source: PYQ_2020

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