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Think of situation when an obejct gets d...

Think of situation when an obejct gets displaced in the absence of a force acting on it.

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Yes. If the object moves with a constant velocity, then no force acts on it. (Newton.s first law of motion.)
Consider a puck on a horizontal air table (a frictionless table) :
When an impulse is given to the puck, it moves (gets displaced) with constant velocity in the absence of a force.
An object observed from a moving reference frame :
If you are sitting in a moving train, a tree or a pillar appears to be moving in the opposite direction.
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KUMAR PRAKASHAN-WORK AND ENERGY -QUESTION & ANSWER (ANSWER THE FOLLOWING QUESTIONS IN SHORT :)
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  5. When is the work done by a force is positive and negative ?

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  6. How is work calculated, if a applying force to the object (i) there is...

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  7. Four men lift a 250 kg box to a height of 1 m and hold it without rais...

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  8. A boy is moving on a straight road against a frictional force of 5 N. ...

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  9. Name different types of energy. Give the unit of energy.

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  10. A freely falling object eventually stops on reaching the ground. What ...

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  11. Write a suitable reason for heating up of a metal when hit by a fast m...

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  12. The figure show a simple pendulum consisting a bob of mass 100 g. Init...

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  14. An object of mass 16 kg has 3200 J of kinetic energy. What will be its...

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  15. Find the momentum of a body of mass 100 g having kinetic energy 500 J.

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  16. An object of mass, m is moving with a constant velocity v. How much wo...

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  17. Calculate the work required to be done to stop a car of 1500 kg moving...

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  18. Can kinetic energy be negative? Why?

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  19. Give any four illustrations of the kinetic energy.

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  20. An object of mass 40kg is raised to a height of 5 m above the ground. ...

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