2. Questions Bank
  3. 9th Class
  4. Science
  5. Work and energy

9th Class Science Work and energy Question Bank Work Power and Energy Formative Subjective Problems

  • question_answer
    Two bodies of mass \[{{m}_{1}}\] and \[{{m}_{2}}\] are moving with equal momentum. What is the ratio of their kinetic energies.

    Answer:

    \[KE=\frac{{{P}^{2}}}{2m}\] \[\Rightarrow KE\propto \frac{1}{m}(\because P=Cons\tan t)\] \[\Rightarrow \frac{K{{E}_{1}}}{K{{E}_{2}}}=\frac{{{m}_{2}}}{{{m}_{1}}}\]


You need to login to perform this action.
You will be redirected in 3 sec spinner