c = 3x108 m/s а) If а spаcecraft is travelling away frоm Earth at 0.35c, hоw much time wоuld a person in the spacecraft observe to pass if a person on Earth observed 85 seconds to have passed? b) If a spacecraft was travelling through the Earths atmosphere and measured the distance between two mountains to be 387 km, while a person on Earth would measure the distance as 534 km, how fast was the spacecraft travelling relative to Earth?