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प्रश्न
Give one example of a motion where an object does not change its speed but its direction of motion changes continuously.
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उत्तर
The motion of an artificial satellite around the earth is an example of a motion (uniform circular motion) where an object does not change its speed but its direction of motion changes continuously.
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संबंधित प्रश्न
Under what condition(s) is the magnitude of average velocity of an object equal to its average speed?
What name is given to the speed in a specified direction ?
Name the physical quantity obtained by dividing ‘Distance travelled’ by ‘Time taken’ to travel that distance.
Arrange the following speed in increasing order (keeping the least speed first):
An athlete running with a speed of 10 m/s.
Write the formula for acceleration. Give the meaning of each symbol which occurs in it.
Convert a speed of 54 km/h into m/s.
Which of the quantity-velocity or acceleration-determines the direction of motion?
Draw the shape of the velocity-time graph for a body moving with (a) Uniform velocity and (b) Uniform acceleration.
The velocity-time graph of a moving body is given below in Figure
The acceleration in parts AB, BC and CD.
A train is moving with a velocity of 90 km h-1 . It is brought to stop by applying the brakes which produce a retardation of 0.5 ms-2 Find :
(i) The velocity after 10 s , and
(ii) the time taken by the train to come to rest .
