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प्रश्न
Distinguish between uniform velocity and variable velocity.
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उत्तर
| Sr. No. | Uniform velocity | Variable velocity |
| 1. | If a body travels equal distances in equal intervals of time along a particular direction, then the body is said to be moving with a uniform velocity. | If a body travels unequal distances in a particular direction in equal intervals of time, or it moves equal distances in equal intervals of time but its direction of motion does not remain the same, then the velocity of the body is said to be variable (or non-uniform). |
| 2. | Example - A body, once started on a frictionless surface, moves with uniform velocity. | Example - The motion of a body in a circular path, even with uniform speed, is with variable velocity as the direction of motion of the body continuously changes with time. |
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संबंधित 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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(a) The distance moved by the cyclist.
(b) The displacement of the cyclist if AB represents north-south direction .
(c) The average velocity of the cyclist.
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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?
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