P1 Flashcards
What do you call measuring devices that are in continuous increments
analouge
What do you call measuring devices that are in specific increments
digital
best way to measure fast oscillations in short periods of time
To find average values of multiples of the actions.
Speed formula
Distance/time
What is instantaneous speed
measured in a short period of time, usually speed of a object in a window of time
What is average time
measured over a longer period of time that includes changes of speed.
What’s a scalar value
only includes size or magnitude
Examples of scalar values
time, mass, speed, and distance
What’s a vector value
includes size or magnitude and direction of travel
Accleration formula
(Current speed - previous speed)/Time taken
What does gradient of distance time graph mean
The steeper it is the faster the speed is
The more curved it is the speed is not constant and increasing
What does the gradient of a speed time graph tell you
The acceleration of it. If it’s horizontal to the x axis it’s moving a constant speed otherwise it’s accelerating or deaccelerating. Also if it touches and stays at the x aixs its stationary. If it’s curving this means there’s a inconsistent acceleration
How to find distance traveled in a speed time graph
Find the area under the gradient
What is a force
A push or pull from a object to another object
What are forces measured in
newtons
How are forces measured
Force meter, or newton meter
How do force affect things
They change sizes or direction of motion
What are some examples of common forces
Air resistance, forward thrust, friction, buoyancy, tension, reaction force, weight, and gravity
What does equilibrium mean
That the forces from opposite sides equal each other
What is newtons 1st law
If there’s no resultant force on a object it will remain at rest or if it was already in motion at a constant velocity
What is newtons 2nd law
A resultant force leads to acceleration leading to the formula f=ma
How to find force equation
Force = Mass multiplied by acceleration
What are objects that air resistnace normally neglect
Moving at low speeds, heaving, small, travelling short distances, or low densitiy mediums (space).
What is the rate of free fall near Earth
9.8m/s
What does sky divings speed time graph look like
Acceleration, terminal velocity at constant, immideite deaccleration and second terminal velocity.
