Physics Motion in straight line

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Motion in straight line

Speed

Speed is distance traveled per unit of time. It shows how fast an object is moving. Speed is the scalar quantity that is the magnitude of the velocity vector. It doesn't have a direction. A higher speed means an object is moving faster. A lower speed means it is moving slower. If it isn't moving at all, it has zero speed.

The most common way to calculate the constant velocity of an object moving in a straight line is the formula:

`s = d / t`

where s is the rate, or speed (sometimes denoted as v, for velocity, as in this kinematics article) d is the distance moved t is the time it takes to complete the movement.
`=>` This equation gives the average speed of an object over an interval of time. The object may have been going faster or slower at different points during the time interval, but we see here its average speed.
`=>` The instantaneous speed is the limit of the average speed as the time interval approaches zero. When you look at a speedometer in a car, you are seeing the instantaneous speed.

Speed is distance traveled per unit of time. It shows how fast an object is moving. Speed is the scalar quantity that is the magnitude of the velocity vector. It doesn't have a direction. A higher speed means an object is moving faster. A lower speed means it is moving slower. If it isn't moving at all, it has zero speed.

The most common way to calculate the constant velocity of an object moving in a straight line is the formula:

`s = d / t`

where s is the rate, or speed (sometimes denoted as v, for velocity, as in this kinematics article) d is the distance moved t is the time it takes to complete the movement.
`=>` This equation gives the average speed of an object over an interval of time. The object may have been going faster or slower at different points during the time interval, but we see here its average speed.
`=>` The instantaneous speed is the limit of the average speed as the time interval approaches zero. When you look at a speedometer in a car, you are seeing the instantaneous speed.

Velocity

Velocity is defined as a vector measurement of the rate and direction of motion or, in other terms, the rate and direction of the change in the position of an object. The scalar (absolute value) magnitude of the velocity vector is the speed of the motion. In calculus terms, velocity is the first derivative of position with respect to time.

The most common way to calculate the constant velocity of an object moving in a straight line is with the formula:

`vecv = vecd / t`

where `vecv` is the rate, or speed d is the distance moved t is the time it takes to complete the movement.

`text(Units of Velocity)`

The SI units for velocity are `m // s` (meters per second). It may be expressed in any units of distance per time. Other units include miles per hour (mph), kilo-meters per hour (kph), and kilo-meters per second (km/s).

Velocity is defined as a vector measurement of the rate and direction of motion or, in other terms, the rate and direction of the change in the position of an object. The scalar (absolute value) magnitude of the velocity vector is the speed of the motion. In calculus terms, velocity is the first derivative of position with respect to time.

The most common way to calculate the constant velocity of an object moving in a straight line is with the formula:

`vecv = vecd / t`

where `vecv` is the rate, or speed d is the distance moved t is the time it takes to complete the movement.

`text(Units of Velocity)`

The SI units for velocity are `m // s` (meters per second). It may be expressed in any units of distance per time. Other units include miles per hour (mph), kilo-meters per hour (kph), and kilo-meters per second (km/s).

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