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प्रश्न
Does the earth move around the sun with a uniform velocity?
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उत्तर
No, the earth moves round the sun with a variable velocity. Since the direction of motion changes at each and every point the velocity becomes variable.
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संबंधित प्रश्न
Write an expression for the work done when a force is acting on an object in the direction of its displacement.
The energy of a body is its capacity to do .........
Give one example each in which a force does (a) positive work (b) negative work, and (c) zero work.
A boy tries to push a truck parked on the roadside. The truck does not move at all. Another boy pushes a bicycle. The bicycle moves through a certain distance. In which case was the work done more : on the trick or on the bicycle? Give a reason to support your answer.
Determine the amount of work done when an object is displaced at an angle of 30° with respect to the direction of the applied force.
In the following case write yes, if the work is being done and no if no work is being done.
A boy climbing up a staircase.
A man squatting on the ground gets straight up and stand. The force of reaction of ground on the man during the process is ______.
