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प्रश्न
Give an example of motion in which the average speed is not zero but the average velocity is zero.
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उत्तर
If a body starts its motion from a point and comes back to the same point after a certain time, then the displacement is zero, average velocity is also zero, but the total distance travelled is not zero, and therefore, the average speed in not zero.
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संबंधित प्रश्न
Name the physical quantity which gives us an idea of how slow or fast a body is moving.
In addition to speed, what else should we know to predict the position of a moving body ?
Which of the following can sometimes be 'zero' for a moving body?
(i) average velocity
(ii) distance travelled
(iii) average speed
(iv) displacement
A bus moving along a straight line at 20 m/s undergoes an acceleration of 4 m/s2. After 2 seconds, its speed will be:
Give an example of the motion of a body moving with a constant speed but with a variable velocity. Draw a diagram to represent such a motion.
Draw the shape of the velocity-time graph for a body moving with (a) Uniform velocity and (b) Uniform acceleration.
Write down the type of motion of a body along with the A – O – B of the following distance – time graph.
Write down the type of motion of a body along with the A – O – B of the following distance – time graph.
Define speed of a body.
Give two examples of uniform circular motion from your daily life.
