PHYSICAL QUANTITY
Velocity: formulas and units of measurement
Velocity: symbol v, unit m/s. Formulas and explanations for Mechanics, MCT and thermodynamics, Oscillations and waves.
vv\frac{\text{м}}{\text{с}}metre per second
KEY CONNECTIONS
Formulas
v=\frac{S}{t}v = S / t
v_{\text{ср}}=\frac{S}{t}vср = S / t
v=v_0\pm atv = v₀ ± at
v=v_0+gtv = v₀ + gt
v=\sqrt{2gh}v = √(2gh)
v_{\text{кв}}=\sqrt{\frac{3RT}{M}}vкв = √(3RT / M)
v=\frac{2\pi R}{T}=2\pi R\nu=\omega Rv = 2πR / T = 2πRν = ωR
a_{\text{ц}}=\frac{v^2}{R}aц = v² / R
v=\lambda\nuv = λν
c=\lambda\nuc = λν
NOTATION
Quantities in formulas
- v
- Velocity is the rate and direction of change of a body's position.
- S
- Distance - the length of the space between selected points.
- t
- Time is a quantity characterizing the duration and sequence of events.
- v_{\text{ср}}
- Average speed is the ratio of the distance traveled to the time of movement.
- v_0
- Initial speed - the speed of the body at the selected initial moment.
- a
- Acceleration is the rate of change of a body's velocity.
- g
- Gravity acceleration is the acceleration of a body under the influence of gravity without taking into account the resistance of the medium.
- h
- Height - vertical distance from the selected level.
- v_{\text{кв}}
- Root mean square velocity is a characteristic of the thermal motion of gas particles.
- R
- The universal gas constant is the coefficient of connection between the parameters of an ideal gas.
- T
- Temperature is a measure of the thermal state of the body.
- M
- Molar mass is the mass of one mole of a substance.
- R
- Radius is the distance from the center of the circle to its point.
- T
- A period is the time of one complete repetition of a process.
- \nu
- Frequency is the number of repetitions of a process per unit of time.
- \omega
- Angular velocity is the speed of rotation of a body around an axis.
- a_{\text{ц}}
- Centripetal acceleration is acceleration directed towards the center of curvature of the trajectory.
- \lambda
- Wavelength is the distance between the nearest points of a wave in the same phase.
- c
- The speed of light in a vacuum is the maximum speed of propagation of interactions.
THEORY
Related Lessons
Speed, average speed and graphs7 class · 24 min→Frame of reference and uniform motion9 class · 26 min→Circular dynamics and satellites9 class · 26 min→Mechanical waves9 class · 24 min→Refraction and total internal reflection9 class · 28 min→Speed and uniform motion10 class · 18 min→Uniformly accelerated motion10 class · 22 min→Ideal gases and constant-parameter processes10 class · 30 min→Magnetic field and forces11 class · 28 min→Waves11 class · 22 min→
PRACTICE
Related tasks
Mechanical motion7 class · 18 problems→Kinematics9 class · 27 problems→Curvilinear movement and balance9 class · 18 problems→Mechanical waves and sound9 class · 18 problems→Light phenomena9 class · 36 problems→Kinematics10 class · 50 problems→Molecular kinetic theory10 class · 24 problems→Magnetism11 class · 23 problems→Oscillations and waves11 class · 48 problems→
DIRECTORY