PHYSICAL QUANTITY

Time: formulas and units of measurement

Time: symbol t, τ, unit with. Formulas and explanations for Mechanics, Modern physics.

t, τsecond

KEY CONNECTIONS

Formulas

t = S / v

t = |v − v₀| / a

t = √(2h / g)

t = √(2S / a)

t = m / (kI)

τ = τ₀ / √(1 − v²/c²)

NOTATION

: Time is a quantity characterizing the duration and sequence of events.
: Distance - the length of the space between selected points.
: Speed is the speed and direction of change in body position.
: Initial speed - the speed of the body at the selected initial moment.
: Acceleration is the rate of change in the speed of a body.
: Height - vertical distance from the selected level.
: Gravity acceleration is the acceleration of a body under the influence of gravity without taking into account the resistance of the medium.
: Mass is a scalar physical quantity that is a measure of the inertia of a body.
: Electrochemical equivalent is the mass of a substance released by a unit charge.
: Current strength is the charge passing through the cross section of a conductor per unit time.
: Proper time is time measured in the reference system associated with the object.
: The speed of light in a vacuum is the maximum speed of propagation of interactions.

THEORY

PRACTICE

Topics in order: the concepts, quantities and formulas of a lesson with explanations and examples.

Statements, answer options and a detailed walkthrough for every topic of the course.

A 10-question check-up, exercises with answer checking, and saved progress.