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प्रश्न
If the displacement of an object is proportional to the square of time, then the object is moving with :
विकल्प
uniform velocity
uniform acceleration
increasing acceleration
decreasing acceleration
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उत्तर
uniform acceleration
We are given with the relationship that,
x = kt2
Differentiating it twice we get,
v = 2kt
a = 2k
Where,
v - velocity
a - acceleration
So, the answer is
(b) Uniform acceleration
संबंधित प्रश्न
Under what conditions can a body travel a certain distance and yet its resultant displacement be zero ?
Can displacement be zero even if the distance is not zero? Give one example to explain your answer.
What information about the motion of a body are obtained from the displacement-time graph?
What can you say about the nature of motion of a body if its displacement-time graph is A straight line parallel to the time axis?
A ball moves on a smooth floor in a straight line with uniform velocity 10 m s-1 for 6 s. At t = 6 s, the ball hits a wall and comes back along the same line to the starting point with the same speed. Draw the velocity-time graph and use it to find the total distance travelled by the ball and its displacement.
A body is moving along a circular path of radius r. What will be the distance and displacement of the body when it completes:
Half a revolution
A body is moving along a circular path of radius r. What will be the distance and displacement of the body when it completes:
`(3/4)` th of a revolution
The SI unit of displacement is ______.
Distance is a ______ quantity.
Obtain a relation for the distance travelled by an object moving with uniform acceleration in the interval between 4th and 5th seconds.
