Chapter 1 lesson 3 Acceleration Flashcards
a measure of a change in Velocity over time
acceleration
when does velocity change
when speed or direction changes
when a car moves faster the velocity ______
when a car moves slower the velocity______
increases
decreases/increases in a negative direction
if a car turns does velocity change
yes, but it doesn’t increase or decrease
like velocity what does acceleration have
direction
what does the length of the arrow shoe
the amount of acceleration
what does the direction of the arrow show
weather velocity is increasing or decrease (it has nothing to do with the direction of the object)
what are the 3 ways an object can accelerate
speeding up, slowing down, changing direction
what does it mean if a number is negative in an equation
it is decreasing/slowing down
on a curve acceleration is always on the ______ of the curve
inside
SI units for acceleration
m/s/s or m/s2
what are the parts to a stg and what axis are they on
they show how speed/velocity and time
x-axis: time y-axis: speed
how does stg show an object at rest
it is on the y=0 point in a horizontal line
how is an object going a constant speed shown
a horizontal line at the speed point on the y-axis
when speed increases how is it shown on a stg
slants up and to the right
how is a decrease in speed shown on stg
slants down and to the right
what do distance time graphs show
speed of an object
what do speed time graphs show
acceleration of an object
speed is ______ and what does this word mean
scaler- only magnitude is measured
acceleration is ______ and what does this word mean
vector- magnitude and direction are measured
distance and speed time graphs can only show _____
magnitude
speed time graphs can’t show _____
direction
what is position
distance and direction from a reference point
Acceleration is calculating what
the change in speed and direction
with speed you can find…
-average speed
-instantaneous speed
-constant and changing speed
