A space probe speeding towards the nearest star moves away from Earth at . The probe sends radio waves towards Earth. The radio waves have a frequency of 1.00 GHz in the probe’s reference frame. What is the frequency of these radio waves as measured by a receiver on Earth?
A moving object initially has a Lorentz factor = 2.50 which later becomes = 10.0.
At what relative velocity is = 2.50?
At what relative velocity is = 10.0?
Suppose a spaceship heading straight toward Earth at can shoot a canister at relative to the ship.
What is the velocity of the canister relative to Earth if it is shot directly at it?
What is the velocity of the canister relative to Earth if it is shot directly away from it?