A jet aircraft is travelling at 850 km/hr at an altitude of 11 km – when an engine falls off! a. Neglecting air resistance, determine the speed of the engine when it hits the ground. Is this realistic? Discuss how assumptions made in the calculations might not reflect the reality of the engine's impact speed. What value might the impact speed actually be and why? b. Determine the horizontal range of the engine (measured from where the jet was located when the engine fell off). c. Reality – Would the engine land at this point in reality? Why or why not? Under what conditions would your solution be valid? Where (roughly) would it actually land?

a)    v = 520.89 m / s , b)    x = 11,186.89 m

Explanation:

This is a projectile launch exercise. In this case the plane travels horizontally, so its initial vertical speed is zero, let's calculate the time it takes to reach the ground

          y = y₀ + v₀t - ½ gt²

          0 = y₀ - ½ g t²

         t = √ (2y₀ / g)

          t = √ (2 11000 / 9.8)

          t = 47.38 s

the speed when reaching the ground is

          vₓ = 850 km / h

let's reduce it to SI units

          vₓ = 850 km / h (1000m / 1 km) (1 h / 3600s)

           vₓ = 236.11 m / s

vertical speed is

            = go - gt

           v_{y} = -9.8 47.38

           v_{y} = - 464.3 m / s

we use the Pythagorean theorem to find total velocity

            v = √ (vₓ² + ²)

            v = √ (236.11² +464.3²)

            v = 520.89 m / s

this speed is not too high, but the reality is that the friction with the air will decrease this significant speed,

b) the range from where the plane will fall

             x = vx t

             x = 236.11 47.38

             x = 11,186.89 m

c) the plane will fall much smaller backfire due to air friction

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 . (i crazy)

most famous scientist who contributed to this physics are:

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:

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