A machine fires n bullets with speed u and mass of each bullet is m if the bullet hit a wall and rebounds with same speed then force acting on the wall is
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Given that,
initial velocity=u m/s
let , time=t sec.
mass=m kg
let,final velocity=v m/s
since the bullet rebound with the same speed,
final velocity=u m/s
force; F=mass×acceleration
=m×(v-u/t)
=m×(u-u/t)=m×0/t=0N
Thus, the force acting on the wall is 0 Newton
initial velocity=u m/s
let , time=t sec.
mass=m kg
let,final velocity=v m/s
since the bullet rebound with the same speed,
final velocity=u m/s
force; F=mass×acceleration
=m×(v-u/t)
=m×(u-u/t)=m×0/t=0N
Thus, the force acting on the wall is 0 Newton
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