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When two blocks connected by a spring mo...

When two blocks connected by a spring move towards each other under mutual interaction

A

(a) their velocities are equal

B

(b) their accelerations are equal

C

(c) the force acting on them are equal and opposite

D

(d) All of the above

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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. A ball is dropped from height 10 m . Ball is embedded in sand 1 m and ...

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  2. If no external force acts on a system

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  3. When two blocks connected by a spring move towards each other under mu...

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  4. If two balls collide in air while moving vertically, then momentum of ...

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  5. When a cannon shell explodes in mid air, then identify the incorrect s...

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  6. In an inelastic collision

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  7. The momentum of a system is defined

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

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

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

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

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

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

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

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

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

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

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

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

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

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