c = 3×108 m/s a) If a spacecraft is traveling away from Ea…
c = 3×108 m/s a) If a spacecraft is traveling away from Earth at 70% of the speed of light and observes 35 seconds to pass on its clock, how much time would have passed for an observer on Earth? b) if a particle travelling through the atmosphere observes the distance between two trees to be 500m but a person standing on Earth observes the distance between the trees to be 700m, how fast was the particle travelling?