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Change in agricultural prices is planning correct; planning guides, sets standards, rational decision making.
Ref: NCERT Business Studies Class XII Chapter 4 Planning defines planning process importance limitations steps effective organizational goals achievement.
Kinetic energy K=½mv² and potential U=mgh per NCERT. Energy conservation K+U=constant for conservative forces. Substituting m, v, h gives 400 m/s as energy, matching option B.
Ref: NCERT Class 11 Physics > Chapter 6: Work, Energy and Power > Topic: Work, Energy and Laws of Motion - Mixed Practice
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