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 ball is dropped from a height h. If the coefficient of restitution be e, then to what height will it rise after jumping twice from the ground [RPMT 1996; Pb. PET 2001]
A) eh/2
B) 2eh
C) eh
D) \[{{e}^{4}}h\]
Correct Answer:
D
Solution :
\[{{h}_{n}}=h{{e}^{2n}}\], if n = 2 then \[{{h}_{n}}=h{{e}^{4}}\]