Relativistic Momentum | Physics with Professor Matt Anderson | M29-06

If you want to double the momentum of a particle by increasing its speed, what do you need to do? Well, you might say double the velocity. In classical physics (for low speeds), you would be right. But once we get to very high velocities, we know that relativity kicks in and things get a bit weird. So maybe it's not just doubling the velocity anymore? Let's sort this out.
Physics with Professor Matt Anderson

[@Al-cynic]

sorry I drifted off...WTF...I'll have to go back.

[@khadimhussainmuzafari7061]

Hello professor Matt Anderson.
How are you?
I have a question for you. How the muons have difference speed and difference life time? Please explain sample to me. Thanks.

[@pleb1235]

I like your video. Very nice.

[@yoprofmatt]

Thanks.
Cheers,
Dr. A

[@tawhidak.4044]

Dr, since the mass and lambda both are same in these two cases, why couldn't we use
2P1 = P2
2*lmbda*m*u = lambda*m*v
2*0.37c = v
v = 0.74 c

[@juniorcyans2988]

Nope! Because gamma ( not lambda) contains v.

[@alazrabed]

Indeed you cannot, as commenter above pointed out. In fact, you can verify that by changing the value of the question, you could easily get v2 greater than c. That is precisely the defect of classical mechanics we're trying to avoid in this lecture.
To go a little further, having a gamma that is a function of speed allows you to increase the energy boundlessly without overcoming c (or equivalently accelerates indefinitely).

[@Al-cynic]

Could you not have said 'I Am Batman' after that long pause, You have a definite Michael Keaton vibe going on (and I think he is as good as oldman and malchovich), but obviously pissed off the wrong people!

[@fizixx]

Fantastic 😎

[@yoprofmatt]

Cheers,
Dr. A

[@samilismaylov8585]

🇦🇿🇦🇿🇦🇿

[@yoprofmatt]

Hello Azerbaijan! Great to meet another Fanderson™.
Cheers,
Dr. A

[@RS-jh2kl]

🥇

[@yoprofmatt]

The gold medal? Wow, I'm honored.
Cheers,
Dr. A