Collisions and Motion WebAssign

Will anyone help with WebAssign? I'm having trouble with #3. I don't want to have to complete this WebAssign before 10 PM tonight (that's when my flight leaves). I told Mr. Rose that I would be leaving on Friday night for my trip to South Africa, and luckily I have time to do the WebAssign because last night's flight was cancelled. I should not have to complete my WebAssign before 10 PM tonight. That's much less time than other students are being given. This WebAssign should be due at 11 PM the night before school starts again (after break).

Airlines

British Airways cancelled our flight from DC to Johannesburg (stopping in London). They won't refund it unless we cancel our return flight. They should be able to give a refund or credit with the airline without canceling the return flight. There should be a law that requires airlines to give refunds or credits without canceling return flights. I've heard arguments like, "Oh, they treat it as one booking. That's why." I'm sorry, but that doesn't cut it. If you have to make your system work better to comply with that law, then a lot of good will have been done by the law, and a lot of computer programmers and engineers will have a good problem to work on: allowing airlines to keep track of flights, not trips. If I cancel one leg of my trip, I should not have to cancel the rest of it to receive a refund or credit with the airline.