Answer:
Before collision,
and
After
collision, m; =100 g = 0.1 kg
(1)
Let
velocity of second object after collision be
Since, there
is no external force on the system.
So,
total momentum before collision = total momentum after collision
(2)
Or
(i)
While walking on sand, the sand gets pressed down, impacting less reaction
force on the person. (1)
(ii)
The mass of the gun is higher. So, it recoils velocity is
less. (1)
(iii)
Given,
(1/2)
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