Question

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​

Answer 1

Answer:

2.5

Explanation:

p= mv

10= 20×v

v=1/2

now, KE= 1/2mv^2

=> 1/2×20/×1/4

=> 2.5