promotion image of download ymail app
Promoted
agsa asked in Science & MathematicsPhysics · 2 months ago

Physics Relativity Question?

A spaceship is travelling at 100,000,000 m/s relative to the Earth when someone at 

the front of the ship turns on a flashlight. How fast do the people on the ship see the light travelling? How fast do people watching from Earth see the light travelling?

5 Answers

Relevance
  • 2 months ago

    "c" and "c" respectively ( approximately 3 * 10 ^ 8 m/s) ALL inertial observers measure the speed of light to be exactly the same.  That is the key tenet of special relativity.

    • Commenter avatarLog in to reply to the answers
  • Dylan
    Lv 6
    2 months ago

    All observers see light traveling at the exactly the same speed but there relative time is different, eg. 1 second for me could be 2 seconds for another observer.

    • Commenter avatarLog in to reply to the answers
  • 2 months ago

    The speed of light is 186,000 miles per second. It does not matter the speed of the object that it starts from or the speed of the object that sees it. What changes is the FREQUENCY. (Doppler shift) If the space ship is traveling toward you the doppler shift will be up, away from the doppler shift will be down.

    • Commenter avatarLog in to reply to the answers
  • 2 months ago

    all observers see the light traveling at exactly c, 299,792,458 m/s

    • Commenter avatarLog in to reply to the answers
  • What do you think of the answers? You can sign in to give your opinion on the answer.
  • Anonymous
    2 months ago

    Everyone measures the same speed for light, 300,000,000 m/sec

    • Commenter avatarLog in to reply to the answers
Still have questions? Get answers by asking now.