A 7.45 g bullet is fired at a 4.0 kg wooden block hanging from a very light string. The bullet strikesthe stationary block at 360 m/s, and lodges in the wood. The bullet/block combination then swings upward to aheight h above its initial position.
(a) What is the speed of the bullet/block combination immediately after the collision?
(b) What is the coefficient of restitution for this collision? Why?
(c) Find the center of mass kinetic energy and the initial value of the convertible energy for this collision.
(d) How much kinetic energy is actually converted to other forms in this collision? What percentage of theoriginal kinetic energy is that?
(e) Where does that energy go?
(f) Find the height h to which the bullet/block combination rises after the impact. Assume the total mechanical energy is conserved for this part of the motion, and there is no energy loss or gain associated with the string.