PROTRACK

A forum devoted to track events from 60m to the 2 mile. Mainly pro but also news from local, national and international sprint & middle distance competitions.

Log in

I forgot my password



Search
 
 

Display results as :
 


Rechercher Advanced Search

October 2017
MonTueWedThuFriSatSun
      1
2345678
9101112131415
16171819202122
23242526272829
3031     

Calendar Calendar


You are not connected. Please login or register

PROTRACK » GENERAL » Physics

Physics

View previous topic View next topic Go down  Message [Page 1 of 1]

1 Physics on Mon Feb 10, 2014 12:36 pm

Biggsy

avatar
Agree, see smoke before the break - however have in mind physics - light travels fast than sound - you will always see the smoke before the hearing the gun

2 Re: Physics on Mon Feb 10, 2014 9:26 pm

ToM

avatar
ProTrack Star
ProTrack Star
Biggsy wrote:Agree, see smoke before the break - however have in mind physics - light travels fast than sound - you will always see the smoke before the hearing the gun

On slow-mo, there is no movement until after the gun flash/smoke. However, the movement comes so soon afterwards that it is likely that
a) it looked like a movement before the gun to the naked eye of the check starter, and
b) the decision to move, whether a deliberate attempt to guess the start or purely accidental, would have come before the gun.

If this occurred in a major amateur event, it is highly likely that the time period between the gun and movement as measured by pressure against the block plates would have registered as less than 0.100s and thus been judged a false start.

Either way, it has very little to do with Physics in this instance as the smoke/flash and movement are both visual indicators.

View previous topic View next topic Back to top  Message [Page 1 of 1]

Permissions in this forum:
You cannot reply to topics in this forum