A 4.0-kg bowling ball strikes a 1.0-kg pin. The pin flies forward with a velocity of 16.0 m/s; the ball continues forward at 6.0 m/s. What was the type of the collision between the bowling ball and the pin? Hint: find the initial velocity of the bowling ball. Then use the velocity results to check whether the mechanical energy is conserved before and after the collision.
a. inelastic
b. elastic
c. completely inelastic.