JEE Main 201910 Apr, Evening shiftPhysicsMediumLaws of Motion70× since 2002
A bullet of mass 20 g has an initial speed of 1 ms^–1
, just before it starts penetrating a mud wall of thickness
20 cm. If the wall offers a mean resistance of 2.5 × 10^–2 N, the speed of the bullet after emerging from the
other side of the wall is close to :