A car is moving with a constant speed on a straight line. A bullet of mass 10 g and velocity 800 m//s is passed through a mud wall of thickness 1 m. Its velocity reduces to 100 m//s. Find the average resistance offered by the mud wall.

A car is moving with a constant speed on a straight line. A bullet of

1.	A car is moving with a constant speed on a straight line. A bullet of mass 10 g and velocity 800 m//s is passed through a mud wall of thickness 1 m. Its velocity reduces to 100 m//s. Find the average resistance offered by the mud wall.
Answer» SOLUTION :`FS = 1/2mv^2-1/2"mu"^2` `F xx1=1/2xx10xx10^-3(100^2-800^2)` F= - 3150 N Resistive force =3150 N