Velocity
Displacement
Distance
Time
Definition
1. Acceleration is the rate of change of velocity with time.
Velocity is a vector physical quantity; both magnitude and direction are required to define it. the length of an imaginary straight path, typically distinct from the path actually travelled by P.
Distance is a numerical description of how far apart objects are. In physics or everyday usage, distance may refer to a physical length, or an estimation
Time in physics is defined by its measurement
Formula
Acceleration= change in velocity / time interval
Average velocity= displacement/time
S= (square root of) xsquared plus y squared
D=xt
X=d/t
Units
The gal, sometimes called galileo, (symbol Gal)
The SI unit of speed and velocity is the ratio of two — the meterper second.
The standard unit of displacement in the International System of Units ( SI ) is the meter (m).
Meter (m)
In the International System of Units (SI), the unit of time is the second (symbol:
Examples
At an amusement park, when you ride a rollercoaster is starts slowly, then faster, then slows down again.
If you walk to a campsite 1 mile away and then back to your start point within 1 hour:
Your average speed would be: total distance/time = 2 miles/1 hour or 2 miles per hour
How far does the earth travel in one year? In terms of distance, quite far (the circumference of the earth's orbit is nearly one trillion meters), but in terms of displacement, not far at all (zero, actually). At the end of a year's time the earth is right back where it started from. It hasn't gone anywhere.
A scalar quantity is a one dimensional measurement of a quantity, like temperature, or weight. A vector has more than one number associated with it.