16/17 please help.

16. Which of the following are correct units for momentum? * 1 point O J.s ON.m ON/J Use the following information for question 17. Students perform an experiment using two very low friction laboratory carts. A piece of timer tape is attached to cart I and fed through the spark timer apparatus. The timer makes a mark on the tape each 0.10 s. Cart I is pushed toward Cart Il, which is initially at rest. The carts collide; the piece of clay is deformed and holds the carts together as they continue to move, The mass of Cart I is 1.54 kg. Tuney Tape Piece of clay Spark Tabletop timer Caut I Cant II 17. The collision above can be described as because * 1 point Elastic ; momentum is conserved O Elastic ; kinetic energy is conserved O Inelastic ; momentum is not conserved Inelastic ; kinetic energy is not conserved