Race cars A and B are driving on the same circular racetrack at the same speed of 45.0 m/s. At a given instant car A is on the north side of the track moving eastward and car B is on the south side of the track moving westward. Find the magnitude of the velocity vector of car A relative to car B.

90 m/s

Explanation:

Given

Speed of both the car is

Suppose North side and East side as Positive Y and x axis

so Velocity of car A can be written as

Velocity of car B is

Velocity of car A relative to car B is given by

Magnitude of velocity is

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