#### Alchemist K

##### IOI

- Joined
- May 5, 2005

- Messages
- 9

- Gender
- Male

- HSC
- 2005

An identical clock remained on Earth. What time in years had elapsed on this clock when seen from the astronaut's spaceship?

A 3.6

B 6.0

C 10.0

D 16.7

The answer is B... but why??? How do you explain this in terms of the time dillation formula? Isn't the astronaut measuring proper time? Then shouldn't the clock be measuring dilated time..? By the formula the dillated time is more.. ? Help pls.

BTW this is from 2003 HSC Question 5