A hiker starts from a campsite and moves as follows:
Stage 1 – 5km due north in 30min.
Stage 2 – 8km due east in 1h.
He then rests for 15min.
Stage 3 – He returns to the campsite directly along a straight path in 45min.
(i) Compute the total distance travelled by the hiker.
(ii) Compute the total time taken, including the rest interval.
(iii) Determine the hiker’s average speed for the entire outing.
(iv) Determine the magnitude of the hiker’s average velocity for the entire outing.