Work Energy And Power Question 94
Question: Two equal masses $ m_1 $ and $ m_2 $ moving along the same straight line with velocities + 3 m/s and ? 5 m/s respectively collide elastically. Their velocities after the collision will be respectively [CBSE PMT 1994, 98; AIIMS 2000]
Options:
A) + 4 m/s for both
B) ? 3 m/s and +5 m/s
C) ? 4 m/s and + 4 m/s
D) ? 5 m/s and + 3 m/s
Show Answer
Answer:
Correct Answer: D
Solution:
As $ m_1=m_2 $ therefore after elastic collision velocities of masses get interchanged i.e. velocity of mass $ m_1=-5\ m/s $ and velocity of mass $ m_2=+3\ m/s $
