b Notice that the vertical axis represents a passenger's height above the ground.
C
c Halfway between the highest point and the ground level is at y=50.
A
a See solution.
B
b See solution.
C
c See solution.
Practice makes perfect
a Notice that one full cycle is when the graph has returned to the same position as when it started.
The passenger gets on when θ=0. Let's add this to the graph.
b Notice that the y-axis shows the height above the ground for a specific seat. Therefore, the bottom of the water pit must correspond to the graph's troughs.
c If a passenger is halfway between the highest point and the ground level, the passenger will be at a height of 50 meters up in the air. Let's mark this on the graph.
As we can see, there are two positions on the screamer where the passenger is halfway between the highest point and the ground level.
