Which of the following is the fastest?, Racing car, Jet airplane, Rocket, Light in a vacuum, How far does light travel in a vacuum in approximately one second?, 300 kilometres, 3,000 kilometres, 300,000 kilometres, 30,000 kilometres, Which particle can travel at the speed of light in a vacuum?, Proton, Electron, Photon, Neutron, What happens to the energy required as an object with mass approaches the speed of light?, It decreases, It stays constant, It increases dramatically, It becomes zero, Approximately how long does sunlight take to reach Earth?, 1 second, 8 minutes 20 seconds, 1 hour, 24 hours, A spaceship travels faster and faster, approaching the speed of light. What would happen?, It would easily exceed light speed, It would turn into light, It would require increasingly more energy, It would stop having mass, Which statement about information travelling through space is correct?, It can travel at any speed, It always travels faster than light, It cannot travel faster than light in a vacuum, It travels only through air, A star is 50 light-years away from Earth. What does that tell us about the light we observe from it?, It left the star about 50 years ago, It left the star 50 seconds ago, It travelled instantly, It travelled faster than light
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