Explain Quantum physics in a summarised, simple way. Thanks!

Quantum mechanics was one of the two great revolutions in modern physics. The first, or Einstein's relativity, was in fact the pinnacle of classical physics. But quantum mechanics and related theories completely changed the world of science and philosophy, and it was the end of classical physics.

Like Einstein relativity, we all use quantum mechanics on a daily basis, but its mathematical principles are very complex and beyond the reach of ordinary people without a degree in physics or mathematics.

In this post, I have tried to make this theory more accessible to all interested loved ones by stating the quantum theory and its consequences for the public.

15.45 m/s

Explanation:

F = 1.2 x 10^3 N, Fk = 615 N, u = 0, s = 25 m

Let the speed after traveling 25 m is v.

mass = F / g = 1200 / 9.8 = 122.45 kg

Net force, Fnet = 1.2 x 1000 - 615 = 1200 - 615 = 585 N

acceleration = Fnet / mass = 585 / 122.45 = 4.78 m/s^2

Use third equation of motion

v^2 = u^2 + 2 a s

v^2 = 0 + 2 x 4.78 x 25 = 238.88

v = 15.45 m/s