Acceleration Flashcards
What is acceleration?
the rate of change in velocity
What is the unit of acceleration?
m/s squared
What quantity is acceleration?
vector quantity
What is the equation for average acceleration?
difference in velocity / difference in time.
What is the average velocity of an object in a roundtrip and why?
0; because it finishes at the same point it started, average velocity = displacement/delta time; 0/anything = 0
What happens if acceleration is the same direction as velocity?
speed increases
What happens if acceleration is opposite direction as velocity?
speed decreases
What is the velocity time graph?
a graph that let’s you identify instantaneous velocity, and acceleration of object and displacement
What does slope tell you in velocity time graph?
it tells you acceleration
What is the equation for displacement in velocity time graph?
1/2 V x detla time
What is the case when line is going up in velocity time graph?
increasing velocity, acceleration is constant, slope is positive
What is the case when line is going down in velocity time graph?
decreasing velocity, accleration is constant, slope is negative
What is the case when line is straight in velocity time graph?
constant velocity, no acceleration
What is the case when line is at rest in velocity time graph?
velocity is zero, object no moving, no acceleration
What is the case when line is curving up in velocity time graph?
changing acceleration, velocity changes nonuniformly, slope = instantaneous acceleration
