Work, Energy, Power & Collision / कार्य, ऊर्जा और शक्ति
JEE Main & Advanced
Physics
Work, Energy, Power & Collision / कार्य, ऊर्जा और शक्ति
Question Bank
Elastic and Inelastic Collision
question_answer
A shell of mass m moving with velocity v suddenly breaks into 2 pieces. The part having mass m/4 remains stationary. The velocity of the other shell will be [CPMT 1999]
A) v
B) 2v
C) \[\frac{3}{4}v\]
D) \[\frac{4}{3}v\]
Correct Answer:
D
Solution :
According to conservation of momentum \[mv=\left( \frac{m}{4} \right)\ {{v}_{1}}+\left( \frac{3m}{4} \right)\ {{v}_{2}}\]Þ \[{{v}_{2}}=\frac{4}{3}v\]