Physics quiz motion graphs and acceleration Flashcards
motion
is a change in position measured by distance and time
speed
tells us the rate at which an object moves
velocity
tells us the speed and direction of a moving object
acceleration
tells us the rate speed or direction changes
where is time plotted
x-axis
what does it mean when further to the right of the axis
the longer time from the start
what does a horizontal line mean on a distance-time graph
the object is not moving
constant speed
the distance of the object and the time are increasing at the same rate
what does constant speed look like on a distance-time graph
a straight line
what does a steeper slope mean on a distance-time graph?
larger distance moved in a given time(higher speed)
what does acceleration look like on a distance-time graph?
the line is curving upwards. it shows an increase in speed( getting steeper)
what is it called when the distance moved is getting larger or changes
acceleration
what does a downward-sloping line on a distance-time graph
it is returning to start
what are speed-time graphs also called
velocity-time graphs
where are speed and velocity plotted
y-axis
what does a horizontal line mean on a speed-time graph
constant speed
what does a straight slope going up mean on a speed-time graph
an increase speed(acceleration)
what does a downward straight slope mean
the speed is decreasing (decelerating)
what does a steeper slope on a speed-time graph show
greater acceleration. increase in speed
what is the acceleration equation?
a= final velocity- initial velocity/time
