Work Energy And Power Question 223
Question: Two bodies of masses 4 kg and 5 kg are moving with equal momentum. Then the ratio of their respective kinetic energies is
Options:
A) $ 4:5 $
B) $ 2:1 $
C) $ 1:3 $
D) $ 5:4 $
Show Answer
Answer:
Correct Answer: D
Solution:
[d] Kinetic energy of a body, $ K=\frac{P^{2}}{2m} $ As $ {p_1}=p_2 $
(Given)
$ \therefore \frac{K_1}{K_2}=\frac{m_1}{m_2}=\frac{5}{4} $
