Question

A bullet of mass 10g moving with a velocity of 100 m/s is stopped with 10cm of the target.find the resistance offered by the target

Answer 1

Explanation:

according to work-energy theorem,

according to work-energy theorem,work done by total force on the system is equal to change in kinetic energy..

so,

work done by resistive force=change in k.e

=>F× -s=1/2m(v²-u²)

=>F × -10/100=1/2×10/1000(0²-100²)

=>F=500 N