EASY
9th CBSE
IMPORTANT
Earn 100

Two bodies having equal masses are moving with a uniform speed of v and 2v, respectively. Find the ratio of their kinetic energies.

Important Questions on Work and Energy

MEDIUM
9th CBSE
IMPORTANT
Physics For Class 9>Chapter 4 - Work and Energy>Exercise>Q 8
How does the wind move the blades of a wind mill?
EASY
9th CBSE
IMPORTANT
Physics For Class 9>Chapter 4 - Work and Energy>Exercise>Q 9
A horse and a dog are running with the same speed. If the weight of the horse is 10 times that of the dog, what is the ratio of their kinetic energy?
EASY
9th CBSE
IMPORTANT
Physics For Class 9>Chapter 4 - Work and Energy>Exercise>Q 10
The mass of an object A is double the mass of another object B. The object A moves at half the speed of the object B. Find the ratio of their kinetic energies.
MEDIUM
9th CBSE
IMPORTANT
Physics For Class 9>Chapter 4 - Work and Energy>Exercise>Q 11
What is meant by the term potential energy? Give its two examples. What is its SI unit?
EASY
9th CBSE
IMPORTANT
Physics For Class 9>Chapter 4 - Work and Energy>Exercise>Q 12
Name the type of energy possessed by a raised hammer.
EASY
9th CBSE
IMPORTANT
Physics For Class 9>Chapter 4 - Work and Energy>Exercise>Q 12
Name the type of energy possessed by a stretched rubber band.
EASY
9th CBSE
IMPORTANT
Physics For Class 9>Chapter 4 - Work and Energy>Exercise>Q 12
Name the type of energy possessed by a wound-up clock.
EASY
9th CBSE
IMPORTANT
Physics For Class 9>Chapter 4 - Work and Energy>Exercise>Q 13
What is meant by gravitational potential energy and elastic potential energy?