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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:

A

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

B

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

C

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

D

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

Text Solution

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The correct Answer is:
A, C
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