A boy starts from his home and walks along a straight road as follows:
(i) 120m east in 2min,
(ii) 80m east in 1min,
(iii) 100m west in 1.5min.
Answer the following:
(a) Calculate the total distance travelled.
(b) Calculate the total displacement from home.
(c) Find the average speed for the entire walk.
(d) Find the average velocity for the entire walk.