Anna and Bob are in identical spaceships, each 100 m long. The diagram shows Bob's view as Anna's ship passes at 0.8c. Just as the backs of the ships pass one another, both clocks there read 0. At the instant shown, Bob Jr., on board Bob's ship, is aligned with the very front of Anna's ship. He peers through a window in Anna's ship and looks at the clock. (a) In relation to his own ship, where is Bob Jr.? (b) What does the clock he sees read? 0 0 Anna's spaceship Bob's spaceship 0.8c

Anna and Bob are in identical spaceships, each 100 m long. The diagram shows Bob's view as Anna's ship passes at 0.8c. Just as the backs of the ships pass one another, both clocks there read 0. At the instant shown, Bob Jr., on board Bob's ship, is aligned with the very front of Anna's ship. He peers through a window in Anna's ship and looks at the clock. (a) In relation to his own ship, where is Bob Jr.? (b) What does the clock he sees read? 0 0 Anna's spaceship Bob's spaceship 0.8c