A bullet traveling horizontally at a very high speed embeds itself in a wooden block that is sitting at rest on a very slippery sheet of ice. You want to find the speed of the block just after the...

A bullet traveling horizontally at a very high speed embeds itself in a wooden block that is sitting at rest on a very slippery sheet of ice. You want to find the speed of the block just after the bullet embeds itself in the block.

(a) What should you choose as the system to analyze?

(1) The bullet

(2) The block

(3) The bullet and the block

(b) Which of the following statements is true?

(1) After the collision, the speed of the block with the bullet stuck in it is the same as the speed of the bullet before the collision.

(2) The momentum of the block with the bullet stuck in it is the same as the momentum of the bullet before the collision.

(3) The momentum of the block with the bullet stuck in it is less than the momentum of the bullet before the collision.