the momentum of the bullet of mass 20g fired from a gun is 10kgm/s. the kinetic energy of this bullet in Kj will be
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Answer:
2.5
Explanation:
The mass of bullet is 20 g or 0.02 kg.
The momentum of the bullet is 10 kg⋅m/s
The kinetic energy of a body in terms of its momentum is given as:
KE=
2m
p
2
KE=
2×0.02
10×10
2500 J= 2.5 kJ
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