A 0.020kg bullet travelling horizontally at 300ms−1 enters a stationary 1.0kg wooden block resting on a smooth horizontal surface. The bullet emerges from the opposite face of the block with a speed of 50ms−1 in the direction opposite to its initial motion.
a. (i) Calculate the speed of the block immediately after the bullet emerges.
b. (ii) Using the given data, determine the coefficient of restitution for the bullet–block collision.