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प्रश्न
A body goes from P to Q with a uniform speed of u and immediately returns back to P at a uniform speed of v. what is the average velocity for the whole journey?
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उत्तर
As body goes from P to Q and then return back to P so the displacement of the body would be zero and hence average velocity would also be zero.
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संबंधित प्रश्न
The S.I. unit of velocity is ___________
When a body said to have a uniform velocity?
Figure represents graphically the velocity of a car moving along a straight road over a period of 100 hours.
How long is the body travelling with a uniform velocity?
Velocity : metre/second :: Acceleration : ______.
Assertion: The Speedometer of a car or a motor-cycle measures its average speed.
Reason: Average velocity is equal to total displacement divided by total time taken.
Exercise Problems.
A ball is gently dropped from a height of 20 m. If its velocity increases uniformly at the rate of 10 ms–2, with what velocity will it strike the ground? After what time will it strike the ground?
A body moves with an initial velocity of 5ms-1 and accelerates at 2ms -2. Its velocity after 10s is ______.
At the highest point, when a body is thrown vertically upwards, the velocity is ______.
Distinguish between speed and velocity.
Define velocity.
