Black Hole Brainteasers: Problem 4

Mathemagicspace, Inc. presents:

Problem 4: The Event Horizon of Doom

You are trapped in a black hole with a variable event horizon. The horizon is moving towards you at a speed of 0.5c. You have a spaceship with a maximum speed of 0.9c. How many seconds will it take for the event horizon to reach you?

Solution 4: Time is Relative (and also a Problem)

Don't worry, the horizon will reach you in 2 seconds. Just remember, in the context of the universe, 2 seconds is a long time. You have plenty of time to contemplate the meaning of space and time... or just panic.

Solution 5: The Mathemagicspace Method (patent pending)