Physics, 05.10.2019 08:00, kh3791

A98kg florida running back is running to the right at 6 m/s toward the oklahoma goal line. the running back is hit by a 118kg oklahoma linebacker running to the left at 4 m/s. (a) what is the momentum of each player? (b) what is the net momentum of the two players after the collision? (c) if the two players entangle and continue traveling as a single unit following the collision, what is their combined velocity? (show all calculations)

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answered: rainbowsauxe

a) 588 kg m/s, -472 kg m/s

b) 116 kg m/s

c) 0.53 m/s

Explanation:

m_1 = Mass of Florida player = 98 kg

m_2 = Mass of Oklahoma player = 118 kg

u_1 = Initial Velocity of Florida player = 6 m/s

u_2 = Initial Velocity of Oklahoma player = -4 m/s

= Combined Velocity

a) Momentum of Florida player

$p=m_u_1\\\Rightarrow p=98\times 6\\\Rightarrow p=588 kg m/s$

Momentum of Oklahoma player

$p=m_2u_2\\\Rightarrow p=118\times -4\\\Rightarrow p=-472 kg m/s$

$p=588-472\\\Rightarrow p=116 kg m/s$

Net momentum of the players is 116 kgm/s

$m_1u_1 + m_2u_2 =(m_1 + m_2)v_c\\\Rightarrow v_c=\frac{m_1u_1 + m_2u_2}{m_1 + m_2}\\\Rightarrow v=\frac{116}{98 + 118}\\\Rightarrow v=0.53\ m/s$

The combined velocity will be 0.53 m/s

answered: Guest

quantum mechanics or quantum physics is physics of very small objects (particles) and physical entities.

quantum physics has some parallels to our macro world and some pretty unique ideas which theoretically and mathematically proven to be true even though we will never be able to access them because of our size.

there are many types of particles: subatomic, elementary etc.

subatomic means they are smaller than atom, elementary means they are at the very basis of everything.

subatomic particles are for eg. protons, neutrons but not electrons.

elementary particles are categorised into 3 groups by what they do.

these 3 groups are quarks, leptons and bosons.

light for example is a particle more precisely a photon a part of leptons.

proton (subatomic particle) is made out of 2 up quarks and 1 down quark each of these has a fractional charge like $\frac{1}{3}$ . (i crazy)

most famous scientist who contributed to this physics are:

max planckalbert einsteinerwin schrödingermany

the topic itself us understand a lot and will probably be vastly used in the future (quantum computers, understanding the big bang,

we also must not forget quantum effects like:

superposition (where 1 thing can be this and that at the same time),entanglement (where two particles are seemingly connected by some sort of unknown (or known) force, energy, matter (i know all that can be the same at least it was at the beginning)

and there is more. but probably too much for this answer to be consistent due to my average understanding of this topic.

hope this you understand quantum mechanics a little more. i'm not an expert in the topic (so don't be like wth if you are an expert) but i'm very interested in it.

anyways quantum physics is a very hard topic (harder than physics (perhaps)) therefore searching for every information there is about it and learning it is unfortunately impossible (you can only specialise into 1 - 3 things or more (perhaps

have fun and i wish you luck!

r3t40

answered: Guest

wavelength divides in half and speed stays the same.