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प्रश्न
Which of the following could not be a unit of speed?
विकल्प
km/h
s/m
m/s
mm s−1
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उत्तर
s/m
Speed is the distance travelled by a moving body per unit time.
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संबंधित प्रश्न
Give one example of a motion where an object does not change its speed but its direction of motion changes continuously.
Give an example of motion in which the average speed is not zero but the average velocity is zero.
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Give one example of following motion :
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A car is moving with a velocity 20 m s-1. The brakes are applied to retard it at a rate of 2 m s-2. What will be the velocity after 5 s of applying the brakes?
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(ii) the time taken by the train to come to rest .
Write down the type of motion of a body along with the A – O – B of the following distance – time graph.
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