Suppose your normal resting heart rate is 60 beats per minute. Now, suppose you board a spaceship that travels away from Earth at 90% of the speed of light. While on the ship, you measure your heart rate. What will it be?
A. It will be 46 beats per minute.
B. It will be 74 beats per minute.
C. It will still be 60 beats per minute.
D. It will be 12 beats per minute.
Answer:C
Suppose your normal resting heart rate is 60 beats per minute. Now, suppose you board a spaceship that travels away from Earth at 90% of the speed of light. While on the ship, you measure your heart rate. What will it be?
A. It will be 46 beats per minute. B. It will be 74 beats per minute. C. It will still be 60 beats per minute. D. It will be 12 beats per minute.