Q.

Which of the following statement is correct regarding the velocity and speed of a moving body? 


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a

The velocity of a moving body is always higher than its speed

b

The speed of a moving body is always higher than its speed

c

The speed of a moving body is its velocity in a given direction

d

The velocity of a moving body is its speed in a given direction  

answer is D.

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Detailed Solution

The velocity of a moving body is its speed in a given direction is a correct statement regarding the velocity and speed of a moving body.
Velocity is a vector quantity which has both magnitude and direction. The speed of the moving object is always greater. The velocity of a moving object is its speed in a given direction. Speed simply has magnitude but no direction, but velocity has both magnitude and direction. This makes velocity a vector quantity. For example, if a train is moving at a speed of 30 km/hr towards the south, then the velocity of the train will be 30 km/hr in the same direction.
  
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