Last Updated On [03-11-2023]
Two balls of masses 
and 
are moving towards each other with speeds 
and 
, respectively. They collide head-on and their speeds are 
and 
after collision
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Column-I |
Column- II |
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(A) |
The speed |
(p) |
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(B) |
The speed |
(q) |
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(C) |
Co-efficient of restitution if |
(r) |
2 |
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(D) |
If collision is inelastic and |
(s) |
4 |
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CODES : |
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A |
B |
C |
D |
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a) |
c |
c,d |
a,b,c,d |
a |
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b) |
c,d |
c |
a |
a,b,c,d |
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c) |
a |
c,d |
c |
a,b,c,d |
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d) |
c,d |
a,b,c,d |
c |
a |
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Question ID - 101106 :- Two balls of masses and are moving towards each other with speeds and , respectively. They collide head-on and their speeds are and after collision
Column-I
Column- II
(A)
The speed 
(in m/s) so that both balls move in same direction if co-efficient 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)
Co-efficient 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 head-on and their speeds are and after collision
|
Column-I |
Column- II |
||||||||
|
(A) |
The speed |
(p) |
|
||||||
|
(B) |
The speed |
(q) |
|
||||||
|
(C) |
Co-efficient of restitution if |
(r) |
2 |
||||||
|
(D) |
If collision is inelastic and |
(s) |
4 |
||||||
|
CODES : |
|||||||||
|
|
A |
B |
C |
D |
|
|
|||
|
a) |
c |
c,d |
a,b,c,d |
a |
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|
b) |
c,d |
c |
a |
a,b,c,d |
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|
|||
|
c) |
a |
c,d |
c |
a,b,c,d |
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|
d) |
c,d |
a,b,c,d |
c |
a |
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(b) i.
Solving, we get
For ii.
For maximum energy to transfer to Solving, we get iii. For this iv. Depends upon |
is always positive
Next Question :
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Match the following: |
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Column-I |
Column- II |
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|
(A) |
Inelastic collisions |
(p) |
Kinetic energy of the system may decrease |
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(B) |
Elastic collisions |
(q) |
Kinetic energy of the system may increase |
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|
(C) |
Total work done is zero |
(r) |
Kinetic energy of the system may remains constant |
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|
(D) |
Non-conservative forces are not present |
(s) |
Just before and after collision, momentum remains constant |
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CODES : |
|||||||||
|
|
A |
B |
C |
D |
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|
a) |
c |
a,d |
b,d |
a,d |
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|
b) |
c,d |
c |
a,d |
a,b,c |
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c) |
c |
a,d |
c,d |
a,b,c |
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d) |
a,d |
c,d |
c |
a,b,c |
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