Question

A man walks 80m in 20s then turns back then walks50m towards the starting point in 30s find his average speed average velocity

Answer 1

given,

distance 1,d = 80m

distance 2,D = 50m

time 1, t= 20s

time 2,T=30s

now,

average speed= total distance /total time

                        =80+50/20+30

                        = 130/50

                        = 2.6m/s

again,

average velocity = total displacement/total time

                            = 30/50

                            = 0.6m/s