Question

a boy goes to market at an average speed of 29 km per hour. finding the market closes, he immediately returns back by the same path with an average speed of 40 km per hour. (a) avrage speed (b) average velocity for the complete journey.​

Answer 1

(i) Average speed = total speed/number of measurements

=)29+40/2=69/2

=)34.5kmph

(ii) average velocity= 0 kmph because the origin is the end point means displacment=0

Answer 2

Step-by-step explanation:

let the distance be x

average speed of the boy=

total distance /total time

=x+x /(x/29) +(x/40)

=2x/(40x+29x/40×29)

=2x×40×29/69x

=2×40×29/69

=2320/69 km/h

Average velocity =total displacement/total time

Displacement=o

Therefore average velocity =0