Solution Q7 A fishing vessel travels a distance of 6 nautical
miles at a speed of 8 knots. It then anchors for
one hour, before travelling a further 5 nautical
miles, in 45 minutes, to the next fishing ground.
It anchors for 30 minutes before sailing 1 hour
back to port.
1 knot = 1 nautical mile per hour.
[a] Draw the distance-time graph for the
fishing vessel.
[b] What was the vessel's average speed for
the entire journey?