(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

In which of these situations is it reasonable to use the approximate formula for the momentum of an object, instead of the full relativistically correct formula?

A car traveling on the interstate.

A proton in outer space traveling at 2×108 m/s.

A commercial jet plane flying between New York and Seattle.

An electron in a vacuum tube traveling 6×106 m/s.

A neutron traveling at 3600 meters per second.

2. Relevant equations

Velocities closer to the speed of light require a relativistic formula for momentum.

3. The attempt at a solutionA car traveling on the interstate.

A proton in outer space traveling at 2×108 m/s. (Relativistic)

A commercial jet plane flying between New York and Seattle. (Approximate)

An electron in a vacuum tube traveling 6×106 m/s. (Relativistic)

A neutron traveling at 3600 meters per second. (Approximate)

I am incorrect in these answers... however, what makes a velocity "close" to the speed of light. Would a neutron traveling 3600 m/s require a relativistic formula? 3600 m/s isn't very close to 3E8 m/s.

Any help or insight would be greatly appreciated! Thanks!

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# Homework Help: Relative momentum formula or not?

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