A force f acts on two body if masses m and 4m for same displacement . conoare thier final kinetic energy
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Class 11
>>Physics
>>Work, Energy and Power
>>Collisions in Two Dimensions
>>Two bodies A and B of the same mass are
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Two bodies A and B of the same mass are moving with velocities v and 3v respectively. Compare their (a) inertia (b) Momentum (c) the force needed to stop them in the same time.
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(a) Since inertia is a measure of mass which is same for both bodies, so the ratio of inertia for two bodies will be
1
1
(b) Momentum
P=m×v
P
1
=m×v=mv
P
2
=m×3v
P
2
P
1
=
3mv
mv
=
3
1
(c) Force
F×T=Momentum
F=
T
Momentum
F
1
=
1
1
F
2
=
1
3
F
2
F
1
=
3
1
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