Studied by 20 people
what is speed
distance travelled by an object per unit time
what is average speed
speed calculated from total distance travelled divided by total time take
why can’t we say someone had a steady speed
we find the average which does not account for if they were increasing or decreasing
what is the SI unit for speed
m/s
what is the SI unit for distance
m
what is the SI unit for time
s
what is another common SI unit for speed
km/h
what two things do you usually have to measure to calculate speed
total time taken and distanced travelled between two points
what does this experiment do
calculate speed in a laboratory
what is a light gate
allows the speed of an object passing between them to be calculateed electronically
what is an interrupt card
allows the speed an object passing through a light gate to be calculated
what is the rearranged equation for distance
distance = speed * time
what is not the rearranged equation for distance
distance = speed/time
what is the rearranged equation for time
time = distance/speed
what is not the rearranged equation for time
time = distance * speed
what is going on in this graph
object has stopped
what is going on in this graph
constant speed
what is going on in this graph
constant speed returning to start
what is going on in this graph
acceleration
what is going on in this graph
deceleration
what is going on in this graph
constant speed
what is going on in this graph
constant speed
what is going on in this graph
acceleration
what is going on in this graph
deceleration
what is going on in this graph
increasing acceleration
which graph finds distance
speed-time
which graph finds speed
distance-time
how do you find the distance travelled
area under speed-time graph
how do you find speed
gradient of distance-speed graph
what two things do you need when calculating acceleration
time taken and change in velocity
what is the formula for acceleration
acceleration = change in velocity/time taken
what other way is more preferred for calculating acceleration
v-u/delta time
what are the SI units for acceleration
m/s²
how do you read 2m/s²
two metres per second per second
which graph do you use to find acceleration
speed-time graph
how do you find acceleration using a graph
gradient of speed-time graph
on a speed time graph, if the line is straight. What does that mean
changing velocity and no changing distance
Note 
Flashcard (43)