Physics formula of compulsory 3 in senior one

Physical theorem, law and formula table 1. Motion of particle (1) --- linear motion 1) uniformly variable speed linear motion 1. Average velocity VT = s / T (definition) 2. Useful inference vt2-vo2 = 2As 3. Velocity VT / 2 = VT + VO / 2 4. Final velocity VT = VO + at 5. Velocity of middle position vs / 2 = [(V

PEP compulsory 1 physical formula all formulas

Physical theorem, law, formula table
1、 Motion of particle (1) --- linear motion
1) Uniform linear motion
1. Average velocity v = s / T (definition) 2. Useful inference vt2-vo2 = 2As
3. Velocity at intermediate time VT / 2 = vplat = (VT + VO) / 2 4. Final velocity VT = VO + at
5. Middle position velocity vs / 2 = [(VO2 + vt2) / 2] 1 / 2 6. Displacement S = V flat t = VOT + at2 / 2 = VT / 2T
7. Acceleration a = (VT VO) / T {with VO as the positive direction, a and VO are in the same direction (acceleration) a > 0; if a is in the opposite direction, a

All the formulas in the first two chapters of physics compulsory 1 in senior one
For example, M-N = t, M = n + T is not necessary
It is necessary to calculate the deformation and the derived formula

Chapter 1 (there is no formula in previous sections) section 3 p15
(velocity) v = Δ x (x1-x2) / Δ t (T1-T2)
Section 5 P26 (acceleration)
A (acceleration) = Δ V (variation of velocity Δ v = VT VO) / Δ t (time for variation Δ t = t (end) - O (beginning))
Chapter 2 (no formula in previous sections) section 2 P34
When v = v. + at does not need x
V2 = 2aX + v.2 without t
X = v. + 0.5at2 without V
X = ((v. + V) / 2) t without a
X = vt-0.5at2 without v

All the formulas of physics compulsory one?

1、 Motion of particle (1) -- linear motion
1) Uniform linear motion
1. Average velocity v = s / T (definition) 2. Useful inference VT 2 – V0 2 = 2As
3. Velocity VT / 2 = vplane = (VT + VO) / 2
4. Final velocity v = VO + at
5. Middle position velocity vs / 2 = [(V_ o2 + V_ t2) / 2] 1/2
6. Displacement S = vplane t = VOT + at2 / 2 = VT / 2T
7. Acceleration a = (V_ t - V_ o) / T in V_ O is the positive direction, a and V_ O in the same direction (acceleration) a > 0; in the opposite direction a > 0

Summary of the formula of physics compulsory 1

1、 Motion of particle (1) --- linear motion
1) Uniform linear motion
1. Average velocity v = s / T (definition) 2. Useful inference vt2-vo2 = 2As
3. Velocity at intermediate time VT / 2 = vplat = (VT + VO) / 2 4. Final velocity VT = VO + at
5. Middle position velocity vs / 2 = [(VO2 + vt2) / 2] 1 / 2 6. Displacement S = V flat t = VOT + at2 / 2 = VT / 2T
7. Acceleration a = (VT VO) / T {take VO as positive direction, a and VO in the same direction (acceleration) a > 0; opposite direction, af2)
2. Synthesis of mutual angular forces
When f = (F12 + F22 + 2f1f2cos α) 1 / 2 (cosine theorem) F1 ⊥ F2: F = (F12 + F22) 1 / 2
3. Range of resultant force: | F1-F2 | ≤ f ≤| F1 + F2|
4. The orthogonal components of the force FX = fcos β, FY = fsin β (β is the angle between the resultant force and the x-axis, TG β = FY / FX)
Note:
(1) The composition and decomposition of force (vector) follow parallelogram rule;
(2) The relationship between resultant force and component force is equivalent substitution relationship, which can replace the joint action of component force with resultant force, and vice versa;
(3) In addition to the formula method, it can also be solved by the drawing method. In this case, the scale should be selected and the drawing should be strict;
(4) When the value of F1 and F2 is fixed, the larger the angle (α angle) between F1 and F2 is, the smaller the resultant force is;
(5) The combination of forces on the same straight line can take the positive direction along the straight line, and the direction of force can be represented by sign, which is simplified to algebraic operation
4、 Dynamics (motion and force)
1. Newton's first law of motion (Law of inertia): an object has inertia, and always maintains a state of uniform linear motion or static state until it is forced to change this state by an external force
2. Newton's second law of motion: F = ma or a = f / MA {determined by the combined external force, consistent with the direction of the combined external force}
3. Newton's third law of motion: F = - F ′ {negative sign means opposite direction, F and f ′ act on each other respectively, the difference between balance force and reaction force, practical application: recoil motion}
4. The equilibrium F of copoint force is equal to 0, and {orthogonal decomposition method, principle of intersection of three forces} is extended
5. Overweight: FN > G, weightlessness: FNR}
3. Forced vibration frequency characteristics: F = f driving force
4. Resonance conditions: F driving force = f solid, a = max, resonance prevention and application [see Volume I P175]
5. Mechanical wave, shear wave and longitudinal wave
6. Wave velocity v = s / T = λ f = λ / T
7. The velocity of sound wave (in air) 0 ℃: 332m / S; 20 ℃: 344M / S; 30 ℃: 349m / S; (sound wave is longitudinal wave)
8. Obvious diffraction of wave (wave continues to propagate around the obstacle or hole) condition: the size of the obstacle or hole is smaller than the wavelength, or the difference is not big
9. Interference condition of wave: the frequency of two waves is the same (the difference is constant, the amplitude is similar, and the vibration direction is the same)
10. Doppler effect: due to the mutual movement between the wave source and the observer, the transmitting frequency and receiving frequency of the wave source are different {close to each other, the receiving frequency increases, otherwise, it decreases}
Note:
(1) The natural frequency of a body is independent of amplitude and driving force frequency, but depends on the vibration system itself;
(2) The strengthening area is where the wave crest meets the wave crest or the wave trough meets the wave trough, while the weakening area is where the wave crest meets the wave trough;
(3) The wave only propagates the vibration, the medium itself does not move with the wave, it is a way of transferring energy;
(4) There are interference and diffraction;
(5) Vibration image and wave image;
(6) Other related contents: ultrasound and its application [see Volume 2 P22] / energy conversion in vibration [see volume 1 p173]
6、 Impulse and momentum
1. Momentum: P = MV {P: momentum (kg / s), M: mass (kg), V: velocity (M / s), same direction as velocity}
3. Impulse: I = ft {I: impulse (n? S), F: constant force (n), t: acting time of force (s), direction determined by F}
4. Momentum theorem: I = Δ P or ft = MVT – MVO {Δ P: momentum change Δ P = MVT – MVO, is vector}
5. Law of conservation of momentum: P before total = P after total or P = P '′ can also be m1v1 + m2v2 = m1v1 ′ + m2v2 ′
6. Elastic collision: Δ P = 0; Δ EK = 0 {that is, the momentum and kinetic energy of the system are conserved}
7. Inelastic collision Δ P = 0; 0

On the formula of speed in Physics

Velocity is a vector, which requires both size and direction, including instantaneous velocity and average velocity,
Velocity = displacement / time
There is velocity in kinetic energy, kinetic energy = mass * velocity * velocity / 2
There is velocity in momentum, momentum = mass * velocity
The acceleration formula has velocity, acceleration * time = final velocity - initial velocity
According to the specific situation of the object movement, the appropriate formula should be selected

The application of all the formulas of compulsory physics

1、 Motion of particle (1) --- linear motion
1) Uniform linear motion
1. Velocity VT = VO + at 2. Displacement S = VO + at &# / 2 = V flat t = VT / 2T
It is a useful inference
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All formulas of physics compulsory one in senior one
I want all of them
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Let me tell you. Anyway, it's time for me to review / I won't talk about the basic ones, such as v = Δ X / Δ T, where Δ stands for 'changing..'t stands for' time ', etc. depending on the situation, you should know that't stands for' time ', a stands for' acceleration ', V stands for' initial velocity ', V stands for' final velocity ', x stands for'

All ancient poems and classical Chinese are required in senior one
Just the title

"Qinyuan chunchangsha", "Yuxiang", "farewell to Cambridge Again"; Jingke assassinates King Qin "the prince and his guests, who know the story, are all given a white crown. To Yishui, they are ancestors, taking the way. Gao Jianli's building, Jingke's harmony and song are the voice of change, and all the scholars are weeping

2, elective 3 -- 1 all physical formulas and derivation

1、 The motion of a particle (1) ---- linear motion 1) uniformly variable speed linear motion 1. Average velocity VT = s / T (definition) 2. Useful inference vt 2-VO 2 = 2As 3. Velocity VT / 2 = VT + VO / 2 in the middle 4. Final velocity VT = VO + at 5. Velocity vs / 2 in the middle [(vo

Physics formula of compulsory 3 in senior one