Exam-style question
Try this first
Which equation represents time dilation?.
- A.Δt = Δτ / γ
- B.Δt = γ Δτ
- C.Δt = γ / Δτ
- D.Δt = Δτ γ²
Model answer
What a good answer should say
- Δt = γ Δτ
Explanation
Why this works
Formula: Δt = γ Δτ. Substitution: γ = 1/√(1–v²/c²).
Working: for any v>0, γ>1, so Δt > Δτ. Answer: this equation shows that a moving clock runs slower.
Units/conclusion: Time dilation is expressed by Δt = γ Δτ, indicating moving clocks run slower.
Common mistake
No common mistake is linked to this question yet.