## Snail velocity final problem

$c=\lambda v$

paytonm1H
Posts: 52
Joined: Thu Sep 27, 2018 11:18 pm

### Snail velocity final problem

When given the momentum of a gamma ray photon, how do you find the velocity of a 200g snail? How can photons have momentum when they are massless?

Jeffrey Xiao 4A
Posts: 35
Joined: Thu Sep 27, 2018 11:28 pm
Been upvoted: 1 time

### Re: Snail velocity final problem

Set KEsnail=Ephoton
so .5mv^2=pc then solve for v

CateJensen3K
Posts: 32
Joined: Thu Sep 27, 2018 11:26 pm

### Re: Snail velocity final problem

I looked at this question for so long. Why a snail?

604656370
Posts: 30
Joined: Thu Sep 27, 2018 11:25 pm

### Re: Snail velocity final problem

Do you remember the exact wording of the question? What info was given about the gamma ray? Would it have been possible to find E(photon) using E=hv and then using that as the Ek for the snail?

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