While loading, a truck moves 10 meters west from point a to point b in 5 seconds then it moves back to point a in 5 seconds what are the average speed and average velocity of the truck

Average speed = (distance covered) / (time to cover the distance)

Average speed = (10m + 10m) / (5sec + 5sec)

Average speed = 20m / 10sec

Average speed  =  2 m/s


Average velocity = displacement/time

Displacement = (distance and direction from start-point to end-point) .

The truck started at point-A and ended at point-A .

Displacement = 0 .

Average velocity = ( 0 ) / (10 sec)

Average velocity = 0

Nps pollution is caused by rainfall or snowmelt moving over and through the ground. nonpoint source pollution can include: excess fertilizers, herbicides and insecticides from agricultural lands and residential areas. oil, grease and toxic chemicals from urban runoff and energy production

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