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OUT OF TWO CARS A AND B, CAR A IS MOVING TOWARDS EAST WITH A VELOCITY OF 10M/S WHEREAS B IS MOVING TOWARDS NORTH WITH A VELOCITY OF 20M/S, THEN VELOCITY OF A W.R.T B IS
Let`s say east be positive X direction. And north be +Y direction. Now VA=10iVB= 20jNow VAB =Va-Vb= 10i-20j so the sqrt(500) = 10sqrt522.36 m/s
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