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Across 1. ______________ can be defined as the ratio of the useful output energy to the energy put into the machine 4. ______________ can be defined as force acting upon an object to cause a displacement in the direction of the applied force 6. SI unit of work is ____________ 7. _______________ is the SI unit for energy either kinetic energy or potential energy 10. ____________energy can be defined as the energy stored in an object due to its height or vertical position

Down 2. The principle of __________________ energy states that energy cannot be created or destroyed but it can be changed from one form to another. 3. Another SI unit of work _______________ 5. _______________energy can be defined as the energy possess by an object due to its motion 8. ______________ is the ability to do work 9. SI unit of power is ____________ 10. _____________ is the rate of which work is done