Advertisements
Advertisements
Question
Two bodies A and B of masses m and M (M ≫ m) have same kinetic energy. Which body will have more momentum?
Advertisements
Solution
Kinetic energy is related to momentum and mass as
p = `sqrt (2 "mk")`
As the kinetic energy of both bodies are same, momentum is directly proportional to square root of mass.
Now, mass of body B is greater than that of body A.
Hence, body B will have more momentum than body A.
APPEARS IN
RELATED QUESTIONS
What is geothermal energy?
(i) The conversion of part of the energy into an undesirable form is called ______________.
(ii) For a given height h, __________________ the length l of the inclined plane, lesser will be the effort required.
Which of the following produces more heat (per unit mass) on burning?
Explain how, geothermal energy is used to generate electricity.
Define the term kinetic energy. Give one example of a body which possesses kinetic energy.
Name the form of energy which a body may possess even when it is not in motion. Give an example to support your answer.
A light mass and a heavy mass have equal momentum. Which will have more kinetic energy?
(Hint : Kinetic energy K = P2/2m where P is the momentum.)
State whether a solar cell produces a.c. or d.c.
State two advantages and disadvantages of using wind energy for producing electricity.
Give one example when:
Heat energy changes to kinetic energy.
