A Ballistic Pendulum a 12.0-g ride bullet is fired with a speed of 380 m/s into a

Question:

A Ballistic Pendulum a 12.0-g ride bullet is fired with a speed of 380 m/s into a ballistic pendulum with mass 6.00 kg, suspended from a cord 70.0 cm long (see Example 8.8 in Section 8.3). Compute
(a) The vertical height through which the pendulum rises,
(b) The initial kinetic energy of the bullet and
(c) The kinetic energy of the bullet and pendulum inundatal after the bullet becomes embedded in the pendulum.