Work energy and power class 9th science
Most important question of work energy and power Class 9 science
1. What is meant by energy? Is energy a scalar or vector quantity?
2. What is the SI unit of energy? What is the relationship between kilowatt-hour and joule?
3. What is mechanical energy?
4. Define kinetic energy. Give two examples of kinetic energy.
5. Derive the formula of the kinetic energy?
6. A mass of 5 kg is dropped from a height of 1 m. Find its (a) kinetic energy (b) velocity.
7. Can any object have Momentum even if its mechanical energy is zero? Explain
8. What is potential energy? How many types of potential energies are there? Define these types of potential energies.
9. Derive the formula for gravitational potential energy.
10. What type of potential energy is stored in a coiled spring of a clock?
11. Can a body posses both the kinetic and potential energies at the same time? Give two examples.
12. Does the transfer of energy take place when you push a huge rock with all your might and fail to move it. Where is the energy you spend going?
Most important question of work energy and power Class 9 science
1. What is meant by energy? Is energy a scalar or vector quantity?
2. What is the SI unit of energy? What is the relationship between kilowatt-hour and joule?
3. What is mechanical energy?
4. Define kinetic energy. Give two examples of kinetic energy.
5. Derive the formula of the kinetic energy?
6. A mass of 5 kg is dropped from a height of 1 m. Find its (a) kinetic energy (b) velocity.
7. Can any object have Momentum even if its mechanical energy is zero? Explain
8. What is potential energy? How many types of potential energies are there? Define these types of potential energies.
9. Derive the formula for gravitational potential energy.
10. What type of potential energy is stored in a coiled spring of a clock?
11. Can a body posses both the kinetic and potential energies at the same time? Give two examples.
12. Does the transfer of energy take place when you push a huge rock with all your might and fail to move it. Where is the energy you spend going?
