MEDIUM
9th CBSE
IMPORTANT
Earn 100

What is the SI unit of energy? What is the relationship between kW h and J?

Important Questions on Work, Energy and Power

EASY
9th CBSE
IMPORTANT
Physics>Chapter 5 - Work, Energy and Power>CLASS ASSIGNMENT 2>Q 3
What is mechanical energy?
MEDIUM
9th CBSE
IMPORTANT
Physics>Chapter 5 - Work, Energy and Power>CLASS ASSIGNMENT 2>Q 4
Define kinetic energy. Give two examples of kinetic energy.
HARD
9th CBSE
IMPORTANT
Physics>Chapter 5 - Work, Energy and Power>CLASS ASSIGNMENT 2>Q 5
Derive the formula of kinetic energy.
MEDIUM
9th CBSE
IMPORTANT
Physics>Chapter 5 - Work, Energy and Power>CLASS ASSIGNMENT 2>Q 6
A mass of 5 kg is dropped from a height of 1 m. Find its kinetic energy and velocity.
MEDIUM
9th CBSE
IMPORTANT
Physics>Chapter 5 - Work, Energy and Power>CLASS ASSIGNMENT 2>Q 7
Two bodies of equal masses move with uniform velocities v, 3v respectively. Find the ratio of their kinetic energies.
MEDIUM
9th CBSE
IMPORTANT
Physics>Chapter 5 - Work, Energy and Power>CLASS ASSIGNMENT 2>Q 8
What is potential energy? How many types of potential energies are there? Define these types of potential energies.
HARD
9th CBSE
IMPORTANT
Physics>Chapter 5 - Work, Energy and Power>CLASS ASSIGNMENT 2>Q 9
Derive the formula for gravitational potential energy.
MEDIUM
9th CBSE
IMPORTANT
Physics>Chapter 5 - Work, Energy and Power>CLASS ASSIGNMENT 2>Q 10
What type of potential energy is stored in a coiled spring of a clock?