Dynamics Flashcards
What is a scalar
A quantity defined by its size only
What is a vector
A quantity defined by a size and direction
What is distance
A scalar so it has a size only. It is defined as the total length of a journey
What is displacement
It is a vector so it has a size AND direction
Is is the shortest path from start to finish
How do you measure vector
Nose to tail
What is speed
The distance traveled in a set time
What is velocity
The displacement traveled in a set time. Which means it also has a direction
What’s acceleration
Change in velocity per second
How do you find distance from a velocity time graph
Area under the graph
What is weight
Force of gravity
What is mass
How much matter there is in an object
Whats newtons first law
An object will remain stationary or travel at a constant speed unless acted on by an unbalanced force
What newtons second law
F = ma
Where F is unbalanced force
m is mass
a is acceleration
Whats newtons third law
Every action has an equal but opposite reaction
