- #1
ZedCar
- 354
- 1
A UFO is observed just above the surface of the Earth moving at a constant velocity. An astronaut on the moon (3.8 x 10^8 m from earth) observes the UFO just above the surface of the moon 2.0s later.
From the UFO's reference frame, how long did it travel from the Earth to the moon?
The answer is given as 1.6s
I was using equation;
Δt = γΔt0
With t0 = 2 seconds
the velocity in γ I calculated to be 1.9x10^8 by using
v=distance/time
v=(3.8x10^8)/2
v=1.9x10^8
But I'm getting an incorrect answer of 2.58 seconds.
From the UFO's reference frame, how long did it travel from the Earth to the moon?
The answer is given as 1.6s
I was using equation;
Δt = γΔt0
With t0 = 2 seconds
the velocity in γ I calculated to be 1.9x10^8 by using
v=distance/time
v=(3.8x10^8)/2
v=1.9x10^8
But I'm getting an incorrect answer of 2.58 seconds.