Two cliff divers decide to have a catch while in mid-air. Which of the following is correct if air resistance can be ignored?

1. Each should throw the ball straight toward the other.
2. Each should throw the ball slightly downward to catch up with the other diver when it reaches her.
3. Each should throw the ball slightly up as it will travel in an arc.

Which of the following is FALSE with regards to the detection of gravitational waves?

1. The closer the source of the waves, the larger the expected signal.
2. The more mass/energy converted to gravitational waves, the larger the expected signal.
3. The changes in the frequency of the observed signal depend on the path the waves take but not the source of the signal.
4. As in looking through a telescope, the further away the source of the signal the longer ago the event occurred.