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Choose the correct options A block at r...

Choose the correct options
A block at rest explodes into 3 parts of the same mass. The momentum of the 2 parts are `-2phati` and `phatj`. The momentum of the third part will have a magnitude

A

P

B

`psqrt3`

C

`psqrt5`

D

zero

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CHETANA PUBLICATION-LAWS OF MOTION -EXERCISE
  1. Choose the correct options A body of mass 2 kg, travelling at 4 m//s m...

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  2. Choose the correct options A particle of mass moving eastward with a s...

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  3. Choose the correct options The coordinate of centre of mass of a hemi...

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  4. Choose the correct options A block at rest explodes into 3 parts of t...

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  5. Choose the correct options The potential energy V of a system is a fun...

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  6. Select and write the most appropriate answer from the given alternativ...

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  7. Select and write the most appropriate answer from the given alternativ...

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  8. Distinguish between gravitational force and nuclear force

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  9. Define inertial frame of reference. State any one example of inertial ...

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  10. Define and explain moment of force.

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  11. Find the position of a centre of mass of a system consisting of two bo...

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  12. Define coefficient of restitution. State its value in case of an inela...

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  13. The potential energy of a system given by u = frac(K)(r^2). Find the s...

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  14. State the physical quantities that decide the trajectory of motion. Ex...

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  15. Why is the moment of a couple independent of the axis of rotation even...

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  16. State and explain work energy theoram for conservative forces.

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  17. A massless inextensible string with masses 1kg and 4kg attached to its...

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  18. State the expression of final velocity of 2 bodies having a head on el...

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  19. Why do we need to know the centre of mass of an object? For which obje...

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  20. A uniform beam 1 m long is supported on knife-edge at 60 cm from left ...

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