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Question
Two cars move in opposite directions. Car A moves at 60 km/hr (east) and Car B moves at 40 km/hr (west). What is the relative velocity of A with respect to B?
Options
20 km/hr east
100 km/hr east
100 km/hr west
60 km/hr east
MCQ
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Solution
100 km/hr east
Explanation:
When moving in opposite directions, velocities add: \[\vec v_{AB}\] = 60 - (-40) = 100 km/hr east.
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