Work Energy And Power Question 76
Question: Consider elastic collision of a particle of mass m moving with a velocity u with another particle of the same mass at rest. After the collision the projectile and the struck particle move in directions making angles $ {\theta_1} $ and $ {\theta_2} $ respectively with the initial direction of motion. The sum of the angles. $ {\theta_1}+{\theta_2}, $ is [UPSEAT 2004]
Options:
A) $ 45{}^\circ $
B) $ 90{}^\circ $
C) $ 135{}^\circ $
D) $ 180{}^\circ $
Show Answer
Answer:
Correct Answer: B
Solution:
If the masses are equal and target is at rest and after collision both masses moves in different direction. Then angle between direction of velocity will be $ 90{}^\circ $ , if collision is elastic.
