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प्रश्न
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?
उत्तर
Body is travelling with uniform velocity from point A to B i.e for (40 - 20) = 20 hr.
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संबंधित प्रश्न
A body moves along a straight track. Half of the distance it covers with a velocity of 40 ms-1 and the remaining half with a velocity of 60 ms-1. What is the average velocity for the whole journey?
Distinguish between speed and velocity.
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?
The equation v = u + at gives information as ______.
The area under the velocity-time graph represents ______.
The initial velocity of a freely falling object is zero as it is released from rest.
Distinguish between speed and velocity.
Define velocity.
Define velocity.
