The car moves at a velocity of 100 m/s and a boy walk at 80m/s in the same direction. What is there relative motion to the earth?
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Velocity of the car = 100 m / sec
Velocity of a boy = 80 m / sec
Relative motion of Earth = ?
___________________________
Speed of the Earth is = 30000 m / sec .
To find relative speed of the earth we have to subtract the velocity of car and velocity of the child .
Relative Speed = 30000 - ( 100 + 80 )
The answer is = 29820
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