Bullet strikes part ll

Classical Mechanics Level pending

A small ball with mass M = 0.2 kg rests on a vertical column with height h = 5m. A bullet with mass m = 0.01 kg, moving with velocity v= 500 m/s, passes horizontally through the center of the ball (Fig. 1). The ball reaches the ground at a distance s = 20 m. What percentage of the kinetic energy of the bullet was converted into heat when the bullet passed trough the ball? Neglect resistance of the air. Assume that g = 10 m/s

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