MEDIUM
9th CBSE
IMPORTANT
Earn 100

Two bodies of equal masses move with uniform velocities v, 3v respectively. Find the ratio of their kinetic energies.

Important Questions on Work, Energy and Power

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?
MEDIUM
9th CBSE
IMPORTANT
Physics>Chapter 5 - Work, Energy and Power>CLASS ASSIGNMENT 2>Q 11
Can a body possess both kinetic energy and potential energies at the same time? Give two examples. 
MEDIUM
9th CBSE
IMPORTANT
Physics>Chapter 5 - Work, Energy and Power>CLASS ASSIGNMENT 2>Q 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?
MEDIUM
9th CBSE
IMPORTANT
Physics>Chapter 5 - Work, Energy and Power>CLASS ASSIGNMENT 2>Q 13
When a body falls freely towards the Earth, its total energy :
MEDIUM
9th CBSE
IMPORTANT
Physics>Chapter 5 - Work, Energy and Power>CLASS ASSIGNMENT 2>Q 14
Which of the following is not the unit of energy?
MEDIUM
9th CBSE
IMPORTANT
Physics>Chapter 5 - Work, Energy and Power>CLASS ASSIGNMENT 2>Q 15
Can any object have momentum even if its mechanical energy is zero? Explain.