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5.work,energy,power and collision — Physics STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 SciencePhysics5.work,energy,power and collision1 Mark
MCQ
In a system of particles, internal forces can change (for the system)
  • A
    The linear momentum but not the kinetic energy
  • ✓
    The kinetic energy but not the linear momentum
  • C
    Linear momentum as well as kinetic energy
  • D
    Neither the linear mometum nor the kinetic energy
✓

Answer

Correct option: B.
The kinetic energy but not the linear momentum
b
Due to the work done by internal for os kinetic energy of system of particles can change but both action and reaction of internal forces are there within the system so no change in momentum take place.

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