With what speed does the object get nearer to the reflection

AI Thread Summary
An object approaching a mirror at speed v gets closer to its reflection at double that speed, 2v. This is because the distance to the mirror is equal to the distance to the reflection, effectively doubling the length traveled. The time taken to reach both the mirror and the reflection is the same. Clarifying the definitions of t1 and t2 as the times taken to reach the mirror and reflection respectively supports this conclusion. Overall, the reasoning is validated with the correct understanding of the time and distance relationship.
annalian
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Homework Statement


An object gets closer to the plain mirror with a speed v. With which speed does it get closer to the reflection?

Homework Equations


l=v*t

The Attempt at a Solution


As l (length of road) is twice as big l2=2l1, but the time is equal t1=t2, then velocity should be two times bigger. Am I right?
 
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annalian said:
As l (length of road) is twice as big l2=2l1, but the time is equal t1=t2, then velocity should be two times bigger. Am I right?

Your answer is correct but I'm not sure I understand your reasoning.
 
CWatters said:
Your answer is correct but I'm not sure I understand your reasoning.
Could you give me a hint about the correct one?
 
annalian said:
Could you give me a hint about the correct one?
You need to explain how you are defining t1 and t2. These are the times taken to do what? (I believe your reasoning is fine if you fill that in appropriately.)
 
haruspex said:
You need to explain how you are defining t1 and t2. These are the times taken to do what? (I believe your reasoning is fine if you fill that in appropriately.)
t1 is the time taken to meet the mirror, t2 i the time taken to meet the reflection. As the mirror and reflection are met in the same time t1=t2
 
annalian said:
t1 is the time taken to meet the mirror, t2 i the time taken to meet the reflection. As the mirror and reflection are met in the same time t1=t2
With that preamble, your answer looks good to me.
 
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