5. A 5 kg block of ice is sliding horizontally at 17 m/s on the floor of an ice-covered valley. It is then collided and stick with another block of ice 5 kg which is initially moving with velocity 12 m/s. Find a) the velocity of the block of ice after the collision, b) how high from the floor will the combined blocks of ice go? Please answer correctly, comprehensively, and completely. Because based on experience, some expert answers were wrong. Thank you.

5. A 5 kg block of ice is sliding horizontally at 17 m/s on the floor of an ice-covered valley. It is then collided and stick with another block of ice 5 kg which is initially moving with velocity 12 m/s. Find a) the velocity of the block of ice after the collision, b) how high from the floor will the combined blocks of ice go? Please answer correctly, comprehensively, and completely. Because based on experience, some expert answers were wrong. Thank you.