An enemy spaceship is moving toward your starfighter with a speed of 0.400 c, as measured in your reference frame. The enemy ship fires a missile toward you at a speed of 0.700 c relative to the enemy ship. If you measure the enemy ship to be 1.00×107 km away from you when the missile is fired, how much time t, measured in your frame, will it take for the missile to reach you?

Part D

Suppose that the missile has an internal clock that is turned on when the missile is fired. What time t ∗ would the clock show just before the missile hits your startfighter?

Express your answer in seconds to three significant figures.