Question

A bullet of mass 40g has its kinetic energy equal to 200j find the speed of the bullet?

Answer 1

Answer:

mass (m) =40g

m=40/1000 kg

k.e=1/2m*v^2

200=40*v^2/(1000*2)

by cross multiplication

v^2=200*1000*2/40

v^2=10,000

v=√10,000

v=100 m/s.......ans..