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The momentum of a system with respect to...

The momentum of a system with respect to centre of mass

A

(a) is zero only if the system is moving uniformly

B

(b) is zero only if no external force acts on the system

C

(c) is always zero

D

(d) can be zero in certain conditions

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The correct Answer is:
C
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DC PANDEY-CENTRE OF MASS, LINEAR MOMENTUM AND COLLISION-Level 1 Objective
  1. In an inelastic collision

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  2. The momentum of a system is defined

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  3. The momentum of a system with respect to centre of mass

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  4. Three identical particles are located at the vertices of an equilatera...

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  5. The average resisting force that must act on 5kg mass to reduce its sp...

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  6. In a carbon monoxide molecule, the carbon and the oxygen atoms are sep...

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  7. A bomb of mass 9kg explodes into two pieces of masses 3kg and 6kg. The...

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  8. A heavy ball moving with speed v collides with a tiny ball. The collis...

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  9. A loaded 20,000kg coal wagon is moving on a level track at 6ms^-1. Sud...

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  10. A machine gun fires a bullet of mass 40 g with a velocity 1200 ms^-1. ...

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  11. A projectile of mass m is fired with a velocity v from point P at an a...

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  12. A ball after freely falling from a height of 4.9m strikes a horizontal...

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  13. The centre of mass of a non uniform rod of length L, whose mass per un...

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  14. A boat of length 10m and mass 450kg is floating without motion in stil...

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  15. A man of mass M stands at one end of a stationary plank of length L, l...

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  16. A ball of mass m moving at a speed v collides with another ball of mas...

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  17. A particle of mass m moving with velocity u makes an elastic one-dimen...

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  18. Two identical blocks A and B of mass m joined together with a massless...

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  19. A ball of mass m moving with velocity v0 collides a wall as shown in f...

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  20. A steel ball is dropped on a hard surface from a height of 1m and rebo...

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