Two balls of masses and are moving towards each other with speeds and , respectively. They collide headon and their speeds are and after collision
ColumnI 
Column II 

(A) 
The speed (in m/s) so that both balls move in same direction if coefficient of restitution is 
(p) 

(B) 
The speed (in m/s) so that the maximum fraction of energy is transformed to (assume elastic collision) 
(q) 

(C) 
Coefficient of restitution if stops after collision and m/s 
(r) 
2 

(D) 
If collision is inelastic and the loss of kinetic energy (in after collision may be 
(s) 
4 

CODES : 


A 
B 
C 
D 



a) 
c 
c,d 
a,b,c,d 
a 



b) 
c,d 
c 
a 
a,b,c,d 



c) 
a 
c,d 
c 
a,b,c,d 



d) 
c,d 
a,b,c,d 
c 
a 


Two balls of masses and are moving towards each other with speeds and , respectively. They collide headon and their speeds are and after collision
ColumnI 
Column II 

(A) 
The speed (in m/s) so that both balls move in same direction if coefficient of restitution is 
(p) 

(B) 
The speed (in m/s) so that the maximum fraction of energy is transformed to (assume elastic collision) 
(q) 

(C) 
Coefficient of restitution if stops after collision and m/s 
(r) 
2 

(D) 
If collision is inelastic and the loss of kinetic energy (in after collision may be 
(s) 
4 

CODES : 


A 
B 
C 
D 



a) 
c 
c,d 
a,b,c,d 
a 



b) 
c,d 
c 
a 
a,b,c,d 



c) 
a 
c,d 
c 
a,b,c,d 



d) 
c,d 
a,b,c,d 
c 
a 


(b) i. Solving, we get is always positive For ii. For maximum energy to transfer to Solving, we get iii. For this iv. Depends upon 
Match the following: 

ColumnI 
Column II 

(A) 
Inelastic collisions 
(p) 
Kinetic energy of the system may decrease 

(B) 
Elastic collisions 
(q) 
Kinetic energy of the system may increase 

(C) 
Total work done is zero 
(r) 
Kinetic energy of the system may remains constant 

(D) 
Nonconservative forces are not present 
(s) 
Just before and after collision, momentum remains constant 

CODES : 


A 
B 
C 
D 



a) 
c 
a,d 
b,d 
a,d 



b) 
c,d 
c 
a,d 
a,b,c 



c) 
c 
a,d 
c,d 
a,b,c 



d) 
a,d 
c,d 
c 
a,b,c 


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