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An object with a constant speed

  • A.Is not accelerated
  • B.Might be accelerated
  • C.Is always accelerated
  • D.Also has a constant velocity

Answer: B

An object with constant speed might be accelerated.

Acceleration is the rate of change of velocity, which is a vector. A body moving in a circle at constant speed is changing direction continuously, so it is accelerating - towards the centre. Only constant velocity guarantees zero acceleration.

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