Motion. Types of motion

In physics, motion is a change in position of an object over time.
Motion is described in terms of displacement, distance, velocity, acceleration, time, and speed.

Types of motion
1.Uniform motion
2.Linear motion
3.non-uniform motion
4.Circular motion
4.Projectile motion
5.Elliptic motion
6.Accelerated and decelerated motion
7.Motion with constant acceleration or deceleration

If the body moves equally along the same length, the motion is called a uniform motion.

If the body moves in an equally distinct time, it is called non-uniform motion.

What kind of motions do these photos refer to?

Circular Motion

2-1. Speed
Definitions:
Speed
The rate at which something moves a given distance.
Faster speeds = greater distances
General formula for speed:
Speed = distance / time
Abbreviations commonly used:
d = distance t = time v = speed
v = d/t

2-1. Speed
Velocity
Distance
Time

2-1. Speed
Average speed is the total distance traveled by an object divided by the time taken to travel that distance.
Instantaneous speed is an object's speed at a given instant of time.

2-2. Vectors
Magnitude of a quantity tells how large the quantity is.
Scalar quantities have magnitude only.
Vector quantities have both magnitude and direction.

2-2. Vectors
Velocity is a vector quantity that includes both speed and direction.

2- 4. Distance, Time
(V1 + V2)
Vavg = 2
d = vavg t
(20mph + 60mph)
= 40mph
2
30mph 2hr = 60miles