Two spaceships move with same speed 0.80c relative to the Earth, but in opposite directions. What is the speed of one ship relative to the other? (c is the speed of light in vacuum)
A: 0.80c
B: 0.976c
C: 0.994c
D: 1.60c
A: 0.80c
B: 0.976c
C: 0.994c
D: 1.60c
举一反三
- 中国大学MOOC: Two spaceships move with same speed 0.80c relative to the Earth, but in opposite directions. What is the speed of one ship relative to the other? (c is the speed of light in vacuum)
- s ________：to happen at the same time or to move at the same speed as something
- The two balls move _______ the opposite directions _______ the same stress.
- The speed of light is greater than ______ of sound.
- What are the main restrictions on the maneuverability of the direct drive propulsion system when it is moving at a low speed?_____ A: Minimum stable speed of main engine B: Reduction gearbox speed C: Clutch performance D: Propeller size