A bullet with initial velocity 150 m/s penetrates a rubber block of thickness 10 cm retarding at 30 m/s2 and then enters a wooden block that stops the bullet after a distance of 6 cm. What will be the retardation when the bullet enters the rubber block?
A bullet with velocity of 10 ms-2 is brought to rest after penitrating a wooden plank of 4cm thickness. Calculate the retardation of the bullet.