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  1. Two cars are moving in the same direction with their respective speeds of 9 km/h and 5 km/h. Find the relative speed of 1st car with respect of 2nd.
    1. 2 km/h
    2. 4 km/h
    3. 8 km/h
    4. 6 km/h
Correct Option: B

We know that for relative speed, the subtraction of speeds takes place, if the motions of the two objects are in the same direction.
∴ Required relative speed = 9 - 5 = 4 km/h



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