5. Two pieces of clay collide and stick together. During the collision, which of these statements are true? (a) Only the momen- tum of the clay is conserved, (b) only the mechanical energy of the clay is conserved, (c) both the momentum and the mechanical energy of the clay are conserved, (d) the kinetic energy of the clay is conserved. Explain why you think your choice is correct and why the other options are wrong. Discuss each option briefly.

5. Two pieces of clay collide and stick together. During the collision, which of these statements are true? (a) Only the momen- tum of the clay is conserved, (b) only the mechanical energy of the clay is conserved, (c) both the momentum and the mechanical energy of the clay are conserved, (d) the kinetic energy of the clay is conserved. Explain why you think your choice is correct and why the other options are wrong. Discuss each option briefly.