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Answer carefully, with reasons : In an...

Answer carefully, with reasons :
In an elastic collision of two billiard balls, is the total kinetic energy conserved during the short time of collision of the balls (i.e. when they are in contact)?

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In an elastic collision of two billiard balls,which of the the following quantities remain conserved during the short time of collision of the balls ? (i.e. when they are in contact) (a) Kinetic energy. (b) Total linear momentum. Give reason for your answer in each case.

In an elastic collision of two bodies , the momentum and energy of each body is conserved .

Answer carefully, with reasons : Is the total linear momentum conserved during the short time of an elastic collision of two balls?

In non-elastic collision, both momentum and kinetic energy are conserved.

Answer carefully, with reasons : If the potential energy of two billard balls depends only on the separation distance between their centres, is the collision elastic or inelastic? (Note, we are talking here of potential energy corresponding to the force during collision, not gravitational potential energy).

When the maximum energy during elastic collision will be exchanged ?

Which of the following potential energy curves in figure cannot describe the elastic collision of two billiard balls ? Here r is the distance between centres of the balls .

If the potential energy of two billiard balls depends only on the separation distance between their centres , is the collision elastic or inelastic ? ( Note , we are talking here of potential energy corresponding to the force during collision , not gravitational potential energy ).

A ball of mass 1 kg is projected horizontally as shown in figure. Assume that collision between the ball and ground is totally inelastic. The kinetic energy of ball in joulesy just collision is found to be 10prop . Find the value of alpha .

In an inelastic collision of two bodies, the quantities which do not change after the collision are the total kinetic energy/total linear momentum/total energy of the system of two bodies.

NCERT GUJARATI-WORK, ENERGY AND POWER-EXERCISES
  1. State if each of the following statements is true or false. Give reaso...

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  2. State if each of the following statements is true or false. Give reaso...

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  3. Answer carefully, with reasons : In an elastic collision of two bill...

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  4. Answer carefully, with reasons : Is the total linear momentum conser...

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  5. Answer carefully, with reasons : What are the answers to (a) and (b)...

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  6. Answer carefully, with reasons : If the potential energy of two bill...

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  7. A body is initially at rest. It undergoes one-dimensional motion with ...

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  8. A body is moving unidirectionally under the influence of a source of c...

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  9. A body constrained to move along the z-axis of a coordinate system is ...

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  10. An electron and a proton are detected in a cosmic ray experiment, the ...

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  11. A rain drop of radius 2mm falls from a height of 500 m above the groun...

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  12. A molecule in a gas container hits a horizontal wall with speed 200 ms...

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  13. A pump on the ground floor of a building can pump up water to fill a t...

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  14. The bob A of a pendulum released from 30^(@) to the vertical hits anot...

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  15. The bob of a pendulum is released from a horizontal position. If the l...

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  16. A trolley of mass 300 kg carrying sandbag of 25 kg is moving uniformly...

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  17. A body of mass 0.5 kg travels in a straight line with velocity v= ax^(...

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  18. The blades of a windmill sweep out a circle of area A. If the wind f...

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  19. The blades of a windmill sweep out a circle of area A. What is the k...

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  20. The blades of a windmill sweep out a circle of area A. Assume that t...

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