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NEET2009PhysicsMotion in One DimensionActual

A bus is moving with a speed of 10 ~ms ⁻¹ on a straight road. A scooterist wishes to overtake the bus in 100 ~s . If the bus is at a distance of 1 ~km from the scooterist, with what speed should the scooterist chase the bus ?

Options

  1. A10 ~ms ⁻¹
  2. B20 ~ms ⁻¹
  3. C40 ~ms ⁻¹
  4. D25 ~ms ⁻¹

Correct answer

B. 20 ~ms ⁻¹

Step-by-step solution

aligned S _ r & = v _ r t 1000 & =( v -10) 100 v & =20 ~m / s aligned

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