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Subjects
Science CBSE
Class 9
Force and laws of motion
Textbook based HOTS
32.
Multiple choice question XXXIII
Exercise condition:
2
m.
A man wearing a bullet-proof vest stands on roller skates. The total mass is
80\ kg
. A bullet of mass
20\ g
is fired at
400\ ms^{-1}
. It is stopped by the vest and falls to the ground. What is then the velocity of the man?
1\ ms^{-1}
0.1\ ms^{-1}
0.01\ ms^{-1}
0\ ms^{-1}
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