movement and position Flashcards
definition of speed
the distance travelled each second of the journey
what is the equation for average speed
average speed = distance moved / time taken
what is the symbol equation for average speed
s = d/t
when an object is stationary what will the line look like on a distance-time graph
straight flat line
when an object is travelling faster what would the line look like on a distance-time graph
steep straight line
how is the speed of the student shown in a distance-time graph
gradient
what are displacement and velocity
vector equivalents of distance and speed
what do vectors have
magnitude (size) and direction
what is displacement
straight line distance in a stated direction
what is velocity
speed in a stated direction
what is the velocity equation
velocity = displacement/time taken
what is the symbol equation for velocity
v = s/t
what is different about a displacement-time graph
they can have negative gradient
definition of velocity
the rate of change of velocity
what is the unit if acceleration
m/s^2
what is the equation to calculate acceleration
acceleration = change in velocity/time taken
what is the symbol equation for calculating acceleration
a = v-u/t
how do you calculate the distance travelled using a velocity-time graph
the area beneath the graph
what is the first equation for uniform acceleration
final speed = initial speed + acceleration x time
what is the first symbol equation for uniform acceleration
v = u + at
what is the second equation for uniform acceleration
final velcocitu^2 = initial velocity^2 + 2 x acceleration x distance
what is the second symbol equation for uniform acceleration
v^2 = u^2 + 2as
if the question involves time which equation do you use
the first one
if the question involves distance which equation do you use
the second one
what is the acceleration of gravity
10 m/s^2
