MOTION - Coggle Diagram
Speed is how quickly an object is changing direction
The faster the speed the more distance an object can travel in a given time
Distance = speed * time
If an object is going at 20 m/s for 1 minute, it will have travelled 60 * 20 = 1200 m
Speed is a scalar quantity
To calculate average speed, take the total distance and divide by the total time
Velocity is speed in a given direction
An object could be going 50 m/s north or 20 mph east
Velocity is a Vector quantity
Velocity can be negative
Acceleration is how quickly an object is changing its velocity
An object's acceleration is calculated by the change in velocity / time
If an object started at rest and then accelerated to a speed of 5 m/s in 2 seconds, how fast is its acceleration?
acceleration = 5/2 = 2.5 m/s squared
The flat lines show a stop and diagonal lines show a constant speed. Curved lines show acceleration.
Flat lines show a constant speed and the diagonal lines show acceleration. Curved lines show increasing or decreasing acceleration and to find the acceleration of a given point on a curve, you take the tangent and find the acceleration of that. The area underneath a velocity time graph is the distance travelled
Scalar and Vector Quantities
Scalar Quantities do not have a direction associated with them, they only have a magnitude. These include: speed, mass, distance, energy, power, density, temperature
Vector Quantities have magnitude in a given direction. These include: acceleration, velocity, displacement, force and weight.