2. The momentum of a bullet of mass 20kg fired from a gun is 10kgm/s.Th
kinetic energy of this bullet in KJ will be----
O a) 5
O b) 1.5
O c)2.5
O d)25
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2
Answer:
2.5
Explanation:
p= mv
10= 20×v
v=1/2
now, KE= 1/2mv^2
=> 1/2×20/×1/4
=> 2.5
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