Chapter 1 part 2: Motion

                                         General Physics

• 1.2: Motion

    When we want to describe the motion of an object , we can talk about how fast it is going, its         speed, and what direction it is going. the speed of an object is how much distance it moves per unit of time , Speed=distance/time.. While in physics we also use the term velocity. Velocity is displacement/time . unlike distance, displacement is the smallest distance between the end of an objects journey and its beginning.

E.G

If a car on a race track completes one lap around the track , and the track is 500 meters long, the car will have a distance traveled of 500 meters , but a displacement of 0 , since the car will have returned to its starting point.

Motion graphs:

We can plot certain quantities about the motion of an object against time
these quantities being 

• Distance
• velocity
• acceleration

Acceleration is the rate of change of velocity. we can calculate acceleration from a velocity time graph by finding the gradient of the line at any one point. Since the equation for gradient is actually the change in Y/ the change in X , actually being the change in velocity over a period of time.
We can also find distance traveled by an object through a velocity time graph. The area under the line in a velocity time graph is equal to distance traveled by the object