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प्रश्न
Is force needed to keep a moving body in motion?
उत्तर
Force is not needed to keep a moving body in motion.
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संबंधित प्रश्न
State one factor on which the magnitude of a non-contact force depends. How does it depend on the factor stated by you?
Give one example in each of the following cases where a force:
(i) Stops a moving body.
(ii) Moves a stationary body.
(iii) Changes the size of a body.
(iv) Changes the shape of a body.
A ball is moving on a perfectly smooth horizontal surface. If no force is applied on it, then will its speed decrease, increase or remain unchanged?
A cricket player holds a cricket ball of mass 100 g by moving his hands backward by 0.75 m. If the initial velocity of the ball is 108 kmh−1, find the retarding force applied by the player.
What is a force?
Rocket works on the principle of conservation of
During dry weather, clothes made of synthetic fibre often stick to the skin. Which type of force is responsible for this phenomenon?
While sieving grains, small pieces fall down. Which force pulls them down?
A gas filled balloon moves up. Is the upward force acting on it larger or smaller than the force of gravity?
Does the force of gravitation exist between two astronauts in space?
