Skyrocket

This task is about interpreting a line graph.
The graph below shows how high a skyrocket travelled over time once it was lit.
 
Height of Skyrocket over time
 
sky-rocket-graph.png

Question 1Change answer

a)  What was the height of the rocket after 11 seconds?  metres
b)  How many seconds did it take the rocket to reach its highest point in the sky?  seconds
c)  How many seconds did it take the rocket to reach a height of 100 metres?  seconds
d)  How many seconds did it take the rocket to travel from 30 metres to 80 metres in height?  seconds