Man A is sitting in a car moving with a ...

Man A is sitting in a car moving with a speed of 54 `(km)/(hr)` observes a man B in front of the car crossing perpendicularly a road of width 15 m in three seconds. Then the velocity of man B (in `(m)/(s)`) will be:

Speed of man `B` is `5sqrt(10)m//s`

Speed of man `B` is `5ms^(-1)`

Actual direction of motion of `B` is at an angle of `tan^(-1)(1/3)` with direction of motion of car

Actual direction of motion of `B` is at an angle of `tan^(-1)(3)` with direction opposite to the direction of motion of car.

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A, C

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