Question

A person moves from point A to point B by covering a distance of 100 m in 10 seconds and comes

back to point A in 20 seconds. Find

a) Distance covered by him

b) Displacement made by him.

c) Find the speed in kilometer per hour

d) Find the velocity of that person.​

Answer 1

Answer:

distance=200m

displacement=0m

speed=200/30*5/18

velocity=0

Answer 2

Answer:

Distance=200m,displacement=0,v=0,speed In km=0.007

Explanation:

Total distance cover is 200m because a person move 100m then he come back from common sense if he move 100m then the distance he cover when back to point is also=100m so then 100+100=200,the journey in which start and end point have same have no displacement that is why displacement is =0, for velocity=disppacment/time and the displacement is zero so then 0/any time ie equal to zero so v=0,the speed =distance/time=100/10=10,100/20=5=10+5=15/2=7.5is average speed In m/sec in km 7.5/1000=0.007k m