. What is the SI unit of Work?

1joule = ________ erg.

Q3. Which of the followings is an example of work done againstforce?

Q4. What is the unit of energy in SI system?

Q5.1 Horse Power (HP) = _________ Watt

Q6. If a person walks on horizontal road with a suitcase onhis hand then the work  done is zero.

Q7. An object of mass 200 g moving with velocity 50 cm/s. Whatis its kinetic  energy?

Q8. A machine does a work of 100 joule in 20 second. What isits power?

Q9. Joule/second is related to –

Q10. A particle is thrown upward with some kinetic energy.What happened to its kinetic  energy atthe highest point or height it reaches.

Q11. Due to application of 5 N force an object moves 10 meteralong perpendicular  direction of theforce. What amount work is done?

Q12. Which of the following is equal with Newton-meter?

Q13. Work done in raising a box on to a platform depends on____.

Q14. What is the work done by the centripetal force on theobject moving in circular  motion?

Q15. With what velocity a student of mass 60 kg run so thathis K.E. becomes 270 J  

Q16. How much power is required to lift a body of mass 100 kgto a height of 60 m in 1  minute? Take g= 9.8m/s2

 Q17. The Bullet ThatHas Fired from a Gun Can Pierce a Target Due to Its __________? 

Q18. A Person Holds a Bucket by Applying a 10n Force. He ThenMoves a Horizontal Distance  of 5m andClimbs up a Vertical Distance of 10m. Find out the Total Work Done by him?

Q19. When the displacement along the opposite direction of theforce. Then the work is said to be__________

Q20. Ocean thermal energy is due to

Q21. In an electric cell while in use, the change in energy is  from:

Q22. In a battery, chemical energy is converted into

Q23. Running water possesses

Q24. Water stored in dam has

Q 25. Light energy to electrical energy

Q26. Total mechanical energy is equal to

Q27. One joule of work is done when 

Q28. Work done on a body is a _________ quantity

Q29. A body of mass 50 kg has a momentum of 3000 kg m/s  Calculate its K.E. and velocity.

Q30. When mass and velocity of the body is doubled then  the K.E. will ____