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A car is chasing a bike 250 meter ahead going in the same direction in 50 seconds. Find the speed of the bike if the speed of the car is 30 m/s?1. 25 m/s2. 20 m/s3. 30 m/s4. 35 m/s |
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Answer» Correct Answer - Option 1 : 25 m/s Given: The speed of the car is 30 m/s and the car is chasing a bike 250 meter ahead of the car in 50 seconds Formula/Concept used: Speed = Distance/time Concept of relative speed Calculation: Let the speed of bike be x km/hr Relative speed = (30 – x) m/s Now, Time = Total distance/Relative speed 50 = 250/(30 – x) ⇒ x = 25 m/s ∴ The speed of the bike is 25 m/s |
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