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driftaligned
2007-Apr-05, 01:26 AM
OK, it's only been 31 years since I thought about this stuff. Recently started listening to the podcast. Towards the end of the podcast on Relativity, conservation of momentum was discussed. As an object approaches "c", time slows, and the mass becomes infinite. So if p=mv and v=d/t, therefore p=md/t. It's the t thing I don't understand. As time slows does t get smaller or bigger, shorter or longer?
Thanks,
Paul

tony873004
2007-Apr-05, 07:52 AM
t would have to get smaller to conserve p, assuming m grows.

driftaligned
2007-Apr-05, 07:37 PM
Wouldn't the numerator and denominator have to increase or decrease together to keep p constant?
Paul

swansont
2007-Apr-05, 08:28 PM
The speed is changing, implying a force. Why would you assume momentum to be constant?