- #1
PeachBanana
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Homework Statement
A spaceship approaches Earth with a speed of 0.6c. A
passenger in the spaceship measures his heartbeat as 60 beats
per minute. What is his heartbeat rate according to an
observer who is rest relative to Earth?
1. 48 beats per minute
2. 56 beats per minute
3. 65 beats per minute
4. 69 beats per minute
Homework Equations
Δt = γ * Δt initial
γ = 1 / [1-(v^2/c^2)]^1/2
The Attempt at a Solution
Δt initial = 60
γ = 1.25
(60)(1.25) = 75 bpm
not an option