ICSE Class 8: Work Videos | Energy

• answer
  
• what is energy
• Fill the blank. Work done by a force depends upon force applied and ........................produce . . ..
• please answer these questions as first as possible and inform me.
  
• Is the energy spent on thinking or talking a kind of work
• A boy of mass 50 kg climbs stairs by spending 1200 joule of energy .how high does boy climb
• Si unit of work is_
• Calculate the power in the following case :  Mass=73k; g =9.8ms^-2;s=37m; t=8.9 s        
• A load of mass 30 kg is lifted up by 7.0 m. Calculate the work done. (Take g=9.8 m s-².
• When does a force do work

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