Sophee left her house on her bike and traveled 3 kilometers north, 5 kilometers east, 3 meters south, then 5 meters west arriving home in time for dinner. what is her distance and displacement?

Distance covered = 16 kilometers

Displacement = 0 kilometers

Explanation:

Distance is defined as the total path length covered and it cannot be zero for a moving object.

Displacement is defined as the distance between the initial and final positions and it may or may not be zero for a moving object.

Here Sophee returns to her house and thus her displacement is zero.

She walks 3 kilometers north , 5 kilometers east , 3 kilometers south and then 5 kilometers west .

So the total distance covered = 3 + 5 + 3 + 5 =16 kilometers.

So the distance travelled by her is 16 kilometers and the displacement is 0 kilometers.

explanation:

v=uf/(u-f)

= 5.-10/(5+10) convex lens has negative focal length

unlike poles attract