Motion: Acceleration and Velocity
Acceleration
Change in velocity/change in time
Acceleration increases when falling because of gravity
Acceleration decreases going up and is 0 at its highest point
Instantaneous velocity
Average Velocity
Final velocity and initial velocity
When it's falling: 10m/s
Final velocity+Original velocity/2
The velocities you collect
-10m/s when it's going up (going against force of gravity). Will be 0 at the top and then start going faster.
Use them to find instantaneous velocity.
Pf-Po OVER Tf-To
Can also use all data and divide by however many there is to average the whole thing.
Another way is to take the first and last and divide by two.
Displacement
Take the AVG velocity = DELTA X/DIFFERENCE IN TIME. Multiply by difference in time.
When plotting positions, Start at 0, then use first position with velocity at 1. Then, start adding the displacements to get the next positions.
It is the velocity at a certain point, NOT the average.
(See Blue for more details)
Units to use
Velocity: m/s
Time: Seconds
Acceleration is m/s/s OR m/s^2
Disaplcement: Meters
Position: Meters
when velocity is constant, acceleration equals 0.
When an object accelerates, it...Must change its velocity
Might only change direction, only speed up, or only speed.
Need measurements for average velocity and time.